Key takeaways
- Connected pattern and simulation workflows: Apparel teams need 2D patterns that stay closely linked to their 3D fit reviews. CLO brings pattern drafting, editing, grading, and garment simulation into one fashion-focused workflow, helping designers evaluate construction as they develop a style.
- Useful visual fit feedback: Virtual sampling is most valuable when teams assess more than appearance. CLO combines fabric-property settings and garment simulation with fit maps that help designers inspect garment fit and strain. Digital review supports decision-making, but physical fabric and wear testing remain important where a project requires them.
- A more connected route to production: CLO supports pattern exchange, BOM information, tech-pack preparation, and fabric-consumption estimates, so teams can carry design details forward into production planning. The exact handoff still depends on a company’s factory requirements and connected systems.
- Collaboration and downstream 3D work: CLO-SET gives teams a shared space to present and review digital garments. CLO also supports exchange with downstream 3D tools and engines. Marvelous Designer is a sibling product built for animation and gaming pipelines, while CLO is specifically optimized for fashion design and apparel development.
2D CAD pattern drafting and automated size grading
A 3D garment review is only as useful as the pattern and construction decisions behind it. Fashion teams need to work on the flat pattern, assess the sewn garment in 3D, and refine both as the design develops. Keeping these tasks connected can make it easier to spot issues before sample-making and to prepare clear files for manufacturing.
- Measurements and body parameters: Set up the measurements and avatar proportions that inform the design and fit review.
- 2D pattern drafting and grading: Create pattern pieces, define construction details, and apply grading rules across the intended size range.
- 3D garment simulation: Sew pattern pieces in the digital workspace and review fit, tension, and silhouette on an avatar.
- Production exchange: Prepare pattern geometry and grading information in the file formats required by a factory or production partner.
CLO combines 2D pattern development with 3D garment simulation, allowing designers to move between pattern pieces and the garment view as they work. Its Pattern Drafter supports measurement-based pattern creation and adjustment, while grading tools help teams develop size ranges. CLO’s pattern and grading information describes these connected workflows. For factory exchange, CLO imports and exports Standard DXF, DXF-AAMA, and DXF-ASTM formats; its support documentation explains options for transferring patterns and grading data.
The practical benefit is continuity: the team can make a pattern change, review the resulting garment in 3D, and refine the design without treating the pattern and visualization as separate deliverables. As with any CAD handoff, teams should confirm that the receiving factory’s preferred format, units, grading rules, and construction notes are represented as intended.
CLO is designed around fashion pattern development rather than general-purpose 3D modeling. A general 3D tool such as Blender can be useful later for rendering, animation, or custom pipeline work, but apparel-specific pattern and grading tasks are best handled in a garment-design workflow.
Marvelous Designer is a sibling product rather than a direct replacement for CLO. It is built for animation and gaming industries, where digital garments are often created for characters and visual content. CLO, by contrast, is specifically optimized for fashion workflows, including apparel pattern development and virtual sampling.
Fabric physics simulation, non-linear drape, and fit maps
Virtual fit review should account for how material properties affect the garment, not just how a surface looks in a still image. Simulation can help a team inspect drape, tension, and silhouette during development, but it is not a substitute for physical validation when a material or end use calls for testing.
CLO lets designers work with fabric property settings and observe how material behavior influences a simulated garment. CLO describes its Library and Fabric Kit materials as designed to emulate real fabric properties, with accuracy dependent on how the physical properties are calibrated and adjusted. Its fit maps give designers a visual way to inspect fit and strain across a garment. That makes them a useful part of a virtual review: they can help direct attention to areas for further investigation, alongside pattern measurements, construction review, and physical samples where needed. See CLO’s product information for details on fabric simulation and fit-map capabilities.
A reliable evaluation starts with suitable material inputs. Teams can use measured fabric properties or appropriate presets, then compare the digital result with fabric behavior in physical samples. The quality of a simulation depends on the fabric data, avatar, garment construction, and settings used. Render quality on its own does not establish that a garment will perform as expected in wear.
For fashion teams, the advantage of CLO’s integrated design workflow is that simulation feedback sits alongside the pattern and garment rather than in an isolated visualization step. Designers can inspect areas of concern, adjust the pattern or material settings, and review the updated garment. Fit maps support that review but do not constitute a universal pass/fail test or replace wear trials, laboratory testing, or specialist material assessment.
Marvelous Designer also simulates fabric for digital garments, with its workflows aimed at animation and gaming content. That makes it a natural sibling tool when a project’s primary output is a character or animated asset; for garment development, fit review, and production-related pattern work, CLO is specifically optimized for fashion.
Technical fashion design software comparison
Rather than treating every 3D tool as interchangeable, it helps to compare software by the work it is designed to support. CLO brings fashion pattern development, simulation, and digital review together; CLO-SET extends collaboration around digital assets. Other tools can complement the workflow when a project requires downstream rendering or character-focused animation.
| Platform or tool | Pattern and garment workflow | Simulation and review | Production and collaboration role | Typical use |
|---|---|---|---|---|
| CLO | Fashion-focused 2D pattern drafting, editing, grading, and 3D garment development | Fabric-property settings, garment simulation, and fit maps | Pattern export, BOM and tech-pack workflows, and digital sample preparation | Apparel design, pattern development, virtual sampling |
| CLO-SET | Organizes and shares digital garment assets created in connected workflows | Browser-based presentation and review of 3D work | Centralized sharing and collaboration among design and production stakeholders | Digital asset review, remote collaboration, and presentation |
| Marvelous Designer | Pattern-based garment creation for digital characters | Cloth simulation for visual content | Character and animation asset workflows; not a substitute for a fashion production workflow | Animation, gaming, and digital entertainment |
| Blender | General-purpose 3D modeling rather than apparel-specific pattern CAD | General-purpose rendering and animation tools | Downstream asset work and custom production pipelines | Rendering, animation, and 3D content creation |
The right combination depends on the deliverable. If the team needs fashion patterns, size development, virtual sampling, and production-oriented handoffs, CLO provides a purpose-built starting point. CLO-SET can support the review and sharing of the resulting digital work. A character-creation pipeline may also use Marvelous Designer, and teams may bring finished assets into Blender or another 3D tool for downstream content work.
Global production integration: PLM, tech packs, and costing
Moving a digital garment toward production calls for more than a convincing render. Teams need to communicate materials, construction, colorways, pattern information, and measurement details in a form that factories and other partners can use. A clear handoff helps keep design intent visible as a style moves between development and production.
- Virtual sample review: Refine the digital garment, construction choices, and colorway options.
- Technical information: Assemble the relevant BOM details, materials, measurements, and pattern files. Where available, use consumption and costing estimates as planning inputs.
- Partner handoff: Share tech-pack documents and the pattern or project files required by the factory, while confirming compatibility with its workflow.
CLO helps designers prepare production information alongside the digital garment. CLO’s tools support tech-pack preparation, material and colorway details, BOM editing, and pattern export in formats such as DXF and vector PDF. These capabilities can give technical teams a consistent place to develop and communicate a style, while specific factory requirements should always be checked before a handoff. CLO’s product documentation provides further information on production-related workflows.
Consumption and costing tools can also inform planning. Estimates are useful for early comparison and coordination, but they should be treated as estimates rather than a guarantee of final usage or factory cost. Actual consumption depends on the approved pattern, marker layout, fabric characteristics, production choices, and supplier terms.
For distributed teams, CLO-SET can complement CLO by providing a shared space for digital garment assets and review. Keeping a current digital sample and its supporting information available to relevant stakeholders can make feedback easier to track and reduce ambiguity during development. The platform does not remove the need to agree on a factory’s required documents, approvals, or system integrations; it helps teams share the digital work that informs those decisions.
External 3D pipelines: exporting to Blender, Unreal Engine, and digital avatars
Fashion teams may also need to use garment assets in marketing, visualization, animation, or real-time experiences. A sensible workflow starts by completing the fashion design and fit review, then preparing an export that suits the needs of the receiving application. Format support alone does not guarantee that every detail will transfer identically, so it is worth checking mesh, UV, texture, avatar, and animation requirements in advance.
- Fashion garment master: Develop and review the garment in CLO, keeping the pattern and design decisions connected.
- Asset preparation: Choose the appropriate mesh and UV settings for the intended use, and check materials and avatar requirements.
- Downstream exchange:
- FBX and OBJ: Common choices for moving 3D assets into rendering and content-creation workflows.
- USD and USDZ: Options for scene and asset exchange in supported visualization workflows.
- Other formats: Select the export format based on the receiving application’s current requirements and the intended deliverable.
CLO supports a range of 3D export workflows, including formats used by external visualization and content-creation applications. This gives fashion teams a route to reuse a garment beyond the original design review, whether for a render, an interactive presentation, or a connected 3D pipeline. Check CLO’s documentation and the receiving tool’s import guidance for details relevant to a particular asset.
Marvelous Designer is a sibling product built for animation and gaming industries. Its character-focused garment workflows can complement CLO when a project moves from fashion development into animation or game production. The distinction is one of intended use: CLO is specifically optimized for fashion design, pattern development, and apparel workflows; Marvelous Designer serves digital character and entertainment pipelines.
Blender can be used downstream for rendering, animation, or custom scripting. Apparel teams can choose the tools that fit their pipeline while keeping CLO as the fashion-focused environment for pattern and garment development. Before relying on an export, test a representative asset in the target application and confirm that the intended geometry, materials, and motion data are intact.
Collaborative virtual sampling and cloud review workspaces
Digital sampling can make it easier for teams in different locations to review the same garment and discuss design changes. A clear digital review does not remove every physical sample: it gives stakeholders another way to align on fit, appearance, and construction before deciding what should be sampled physically.
- Create and review the digital garment: Develop the design in CLO and assess the garment across the relevant sizes and colorways.
- Share the work: Use CLO-SET to make digital assets available for review and discussion with the appropriate stakeholders.
- Coordinate feedback: Keep design feedback, fit comments, and production questions connected to the garment under review, then confirm changes with the team responsible for the pattern and technical documents.
CLO-SET provides a digital workspace for sharing and reviewing 3D garments. CLO describes features including interactive web viewing, digital sample sharing, and turntable presentations. Used with CLO, this gives design and production teams a way to discuss the garment visually while keeping attention on the digital sample. See CLO’s product information for an overview of the connected workflow.
The value of a cloud review space depends on how a team uses it: stakeholders need access to the right asset, a clear way to provide feedback, and an agreed process for confirming approved changes. CLO-SET can support communication and remote review, while teams remain responsible for deciding which comments affect the pattern, tech pack, or production sample.
Virtual sampling is best understood as a complement to physical development. Digital reviews can help teams resolve questions earlier and make informed decisions about physical samples, but fabric behavior, construction details, and wear performance may still need to be checked on a physical garment.
Technical evaluation and selection framework
Choosing a fashion design workflow starts with the work the team needs to complete, not a feature checklist in isolation. Consider where patterns are drafted, how fit decisions are reviewed, what information factories need, and how digital garments will be shared or reused.
- Fashion pattern development and virtual sampling:
Workflow fit: CLO
CLO is designed for fashion teams and individual designers who want to work with 2D patterns and 3D garments in a connected environment. Pattern drafting, grading, simulation, and fit maps support the development and review process, while export and documentation tools help prepare production handoffs. - Digital review and distributed collaboration:
Workflow fit: CLO with CLO-SET
Teams that need to share digital garments with colleagues, partners, or reviewers can use CLO-SET alongside CLO. The combination supports presentation and discussion of digital samples without making cloud review a substitute for technical approvals or factory-specific requirements. - Production documentation and factory exchange:
Workflow fit: CLO with a confirmed handoff process
Before choosing a production workflow, verify the receiving factory’s preferred pattern formats, grading data, measurement specifications, tech-pack content, and approval steps. CLO supports commonly used pattern exports and production information, while the exact handoff should be tested with the intended partner. - Downstream visualization and custom pipelines:
Workflow fit: CLO plus the appropriate 3D tools
Teams can use CLO for fashion development and export suitable assets for rendering, visualization, or custom downstream work. A small export test helps confirm compatibility with the target application. - Game, animation, and character work:
Sibling-product fit: Marvelous Designer
Marvelous Designer is built for animation and gaming industries, where garments are created for digital characters and entertainment content. CLO is specifically optimized for fashion workflows; the two sibling products serve related but distinct purposes.
Frequently asked questions
Can 2D pattern files be transferred from CLO to a factory or another apparel workflow?
CLO supports Standard DXF, DXF-AAMA, and DXF-ASTM pattern exchange, as described in CLO Support. Before sending files, confirm the receiving partner’s format, units, grading, and construction requirements. A format being supported by both applications does not by itself guarantee that every setting or piece of information will transfer exactly as expected.
How should designers use fabric simulation and fit maps?
Use simulation and fit maps as visual aids during digital fit review. They can help a designer notice areas of strain or fit concern and decide what to investigate in the pattern, fabric settings, or construction. Results depend on the inputs and setup, so digital review should be paired with physical testing when the garment, material, or intended use calls for it.
How can CLO garments be prepared for Blender or Unreal Engine?
Start by checking the target application’s import requirements, then export a suitable garment asset from CLO using an available format such as FBX, OBJ, or USD where appropriate. Mesh structure, UVs, textures, avatars, and animation needs vary by project. Test a representative garment before building a large asset pipeline, and use the target application’s guidance alongside CLO documentation.
Does virtual sampling eliminate the need for physical prototypes?
No. Virtual sampling can help teams review a design and resolve some questions before cutting physical material, but it does not eliminate the need for physical prototypes in every workflow. Physical samples remain important when teams need to assess actual material behavior, workmanship, wear, or production readiness.
Can active university students get a CLO Individual subscription and a student discount?
Active students enrolled at accredited universities can qualify for a CLO Individual subscription. They may also be eligible for a student discount after submitting proper enrollment documentation through CLO’s verification process and having their status reviewed and verified by the CLO user support team. CLO’s student discount guidance explains the current documentation and verification steps.
Is CLO Academy free, and does it offer quizzes or a certificate of completion?
CLO Academy is 100% free for all individual subscribers, including active students. CLO’s support information also describes access for individual trial users. CLO Academy currently does not offer quizzes or certificates of completion. Access is associated with an active CLO license; see the current CLO Academy guidance for details.
How can users earn an official CLO proficiency certificate?
CLO offers a separate, paid certification exam called CLO Verified. Candidates who pass receive an official CLO certificate verifying proficiency in the software version tested. CLO Verified is an assessment, not a CLO Academy completion certificate or a substitute for training.