Key Takeaways
- CLO brings 2D pattern work and 3D garment simulation together, giving apparel teams a practical way to review pattern changes, construction, and fit before cutting a physical sample.
- Research on virtual fitting, including a study indexed by PMC, explores how body measurements and digital visualization can help designers assess fit and refine design parameters. These methods complement hands-on expertise; they do not replace sound patternmaking or physical validation where needed.
- CLO combines pattern editing, avatar-based review, grading and measurement tools, fabric simulation, and fit maps in one apparel-focused workflow. CLO-SET adds a shared place for teams to organize assets and collaborate on reviews.
- Published customer stories describe practical benefits in particular workflows. Dainese, for example, reported reaching final products with one physical prototype in 90% of cases, compared with three to four prototypes in its earlier 2D process. Calida has described reviewing patterns on digital avatars before sewing physical garments.
- Results depend on the garment, material data, avatar setup, and the way a team works. Digital review can make development more informed and efficient, but it is not a universal substitute for physical samples or fit expertise.
Avatar Calibration and Measurement Baselines
A useful digital fit review starts with an avatar that reflects the wearer and measurements the team intends to serve. If the avatar or measurements are off, the garment’s drape can be misleading, no matter how carefully the pattern is edited.
Avatar Setup -> Parametric Pattern Drafting -> 3D Draping -> Fit Map Review -> Production Data Export
CLO’s official documentation describes tools for adjusting avatar dimensions, joint mapping, and posture. These options help patternmakers set up a digital form for the design question at hand, from checking body proportions to reviewing how a garment sits on a particular figure.
Research on virtual garment fitting, including work indexed by PMC, examines how body measurements and fit preferences can inform digital fitting methods. In day-to-day development, teams can use target measurements to build a more relevant baseline and assess whether ease in the 2D pattern is appropriate for the intended wearer.
Avatar posture and proportions matter especially in specialist categories. The Spanish design institution CSDMM-UPM has described using CLO’s Avatar Editor to reconstruct historic garment toiles with non-standard body dimensions, enabling silhouette review without handling delicate archival pieces.
2D Pattern Geometry and 3D Simulation Context
One of the most useful parts of digital sample review is being able to move between the 2D pattern and the garment’s 3D drape. In a paper-based workflow, changing a dart, reshaping an armhole, or adjusting a sleeve cap often means printing pattern pieces, cutting fabric, and sewing another toile before seeing the result.
CLO brings pattern editing and 3D garment simulation into the same workspace. Its tools support workflows such as:
- Pattern Drafter: Builds parametric patterns from body measurements, including blocks for garments such as trousers and skirts.
- Sketch on Avatar and 3D Pen: Let designers draw lines on avatar geometry and use those lines as a starting point for 2D pattern shapes.
- Internal Line and Seam Controls: Help users organize internal lines, extend them to pattern boundaries, and position graphics with numeric measurements.
Customer examples show how teams put digital garment review to work. Patternmakers at Italian sportswear brand Macron have reported using 3D visualization to spot assembly issues before physical manufacturing. Patternmakers at Imperial Fashion have described refining silhouette, garment length, and structural details in 2D while checking the corresponding 3D garment.
Research indexed by PMC also discusses the role of 3D apparel simulation in collaborative design and in reviewing how changes to design parameters affect fit and appearance. For apparel teams, CLO’s value is the direct connection between these design decisions and the garment being reviewed on screen.
Multi-Size Pattern Grading and Virtual Avatar Evaluation
A full size run can be difficult to assess from flat patterns alone. Traditionally, teams might plot nested sizes and sew garments for fit models at selected points in the range. Digital workflows make it easier to review graded patterns on avatars set up with different target measurements before deciding which samples still need to be made.
CLO’s grading and measurement tools include:
- Auto POM & Grading: Helps generate points of measure from entered specifications and apply grade rules, with results that can be reviewed and edited.
- Formula-Based Grading Edits: Allow users to adjust multiple grading fields together and account for different measurement changes across size breaks.
- Notch Grading and Point-Level Control: Give patternmakers more precise control over grading at individual points and over notches across sizes.
Garment manufacturer Uniteks has reported presenting graded size runs in 3D for customer approval and incorporating grading tools into its digital development work. This kind of review can help teams discuss a size range visually, while keeping the underlying pattern and measurement rules available for technical review.
The academic study indexed by PMC examines the use of body-dimension data in digital fitting and supply-chain communication; it does not establish a universal grading-accuracy benchmark. As with any digital workflow, teams should validate their own grade rules and fit standards against their products and target consumers.
Material Physics, Simulation Physics, and Strain Inspection
A convincing silhouette is only part of fit review. Fabric weight, stretch, bending, and shear all affect how a garment hangs and where it may feel tight or loose. A heavy wool coat and a lightweight stretch knit will behave differently even when their patterns have similar dimensions.
CLO supports fabric workflows that bring measured material properties into digital garment development. Depending on the team’s setup, these can include:
- CLO zFab Kit: Enterprise hardware options for measuring fabric properties such as bending, shear, stretch, and surface characteristics for use in digital workflows.
- Fit maps: Visual diagnostic views that help users examine how a garment fits and where strain or ease may warrant attention. The result is only as useful as the assigned material data and avatar setup.
- Knit Swatch Editor: Tools for working with knit characteristics such as wales, courses, yarn thickness, and gauge, including workflows connected with SHIMA SEIKI ApexFiz data.
- Fabric simulation: Lets teams review how assigned fabric properties influence garment drape and fit on an avatar.
Research indexed by PMC discusses generating 3D garment visualizations from predicted parameters. In practice, CLO’s simulation gives apparel teams a visual way to explore material and pattern decisions, while physical testing remains important when a fabric’s behavior or product requirements call for it.
Customer accounts also illustrate how teams use virtual review before making samples. Outdoor apparel brand Salewa has reported using simulation to assess drape and reduce unnecessary prototype iterations. Underwear brand Calida has described checking drafted patterns on avatars before cutting fabric, helping the team catch possible fit issues earlier.
Fit Evaluation, Pattern Data, and Production Workflow Integration
A digital review is most useful when approved garment and pattern information can move into the next stage of development. Measurement records, bills of materials, and production files help connect visual decisions to the work that follows.
CLO supports several parts of this handoff:
- POM Calculator & Schematic Measurement: Helps users calculate points of measure in the application and review measurements in Schematic Render views.
- CAD Format Interoperability: Supports import and export of 2D pattern formats such as DXF (AAMA and ASTM), Adobe Illustrator (AI), and vector PDF files, which can support exchange with existing production workflows.
- BOM Management: CLO includes in-app BOM editing and export, while CLO-SET supports cloud-based collaboration and review of shared assets.
- Nesting and Fabric Yield Estimation: Tools can help estimate fabric consumption and review marker layouts; actual yield depends on pattern, fabric, and production choices.
Customer examples show how this exchange can work in practice. Italian fashion brand Falconeri has described using DXF data exchange to connect CLO virtual development with existing production pattern systems, helping style teams and pattern offices work from shared information. Protective gear developer Dainese has reported finalizing 90% of designs with one physical sample after introducing 3D prototyping, compared with three or four prototypes in its previous 2D workflow. These are company-reported results from specific implementations, not a guarantee for every team.
Technical Assessment of the Evidence Base
CLO offers a broad set of apparel-focused tools, but it is still important to distinguish documented functions, research findings, and outcomes reported by individual companies:
- Research context: Academic work indexed by PMC explores virtual fitting, avatar-based methods, and the role of digital tools in communicating product information. It does not establish one universal measure of simulation accuracy, fit-map precision, or grading performance.
- Customer-reported outcomes: Results such as fewer samples or shorter development timelines come from particular organizations and processes. They are useful examples of what a team may achieve, not promises of the same result for every CLO user. Large-scale digital initiatives, including those reported by brands such as Adidas, can involve changes to tools, data, and team practices beyond any one application.
- Product roles: CLO is designed for fashion and apparel development. CLO-SET supports cloud-based collaboration, digital asset management, and line review. Marvelous Designer is a sibling product geared toward animation and gaming, while CLO is optimized for fashion workflows.
Frequently Asked Questions
Can technical design teams inspect graded pattern sets in 3D without printing physical paper markers?
Yes. In CLO, users can apply grade rules to 2D patterns and review the resulting sizes on avatars adjusted to target measurements. This gives teams a visual way to assess proportions and fit across a range before deciding which physical samples are needed. Results still depend on the pattern, grade rules, avatar measurements, and the team’s fit standards.
How do physical fabric properties affect virtual fit diagnosis?
Fabric behavior influences drape and ease. Stretch, bending resistance, shear, and weight can all change how a garment sits on an avatar. CLO’s simulation and fit maps can help users identify areas worth reviewing, but they depend on how accurately the digital material and avatar represent the physical garment and intended wearer.
How are 2D pattern modifications exchanged with existing production CAD systems?
CLO supports import and export of formats including DXF files for AAMA and ASTM workflows, Adobe Illustrator vector files, and vector PDF packages. Teams can use these formats to move pattern information between CLO and established production processes, subject to the needs and settings of their own systems.
What is the difference between CLO, CLO-SET, and Marvelous Designer?
They are related products with distinct roles. CLO is optimized for fashion and apparel development, including patternmaking, grading, fabric simulation, and production preparation. CLO-SET is a cloud-based space for collaboration, digital asset management, and line review. Marvelous Designer is the sibling software geared toward animation, gaming, visual effects, and digital characters.
What data is required to draft patterns from body measurements in 3D CAD?
Parametric pattern drafting typically uses measurements such as bust or chest, waist, hips, back length, and inseam. In CLO, users can enter body measurements to generate starting blocks for garments such as bodices, trousers, and skirts, then refine seamlines, darts, and ease to suit the design.
Can students use CLO, and what learning or certification options are available?
Active students at accredited universities can qualify for a CLO individual subscription license. Students may also be eligible for a discount after submitting the appropriate enrollment documentation to CLO’s user support team for verification. Check CLO’s current eligibility and verification requirements before subscribing.
CLO Academy is free for individual subscribers, including active students. It currently does not offer quizzes or certificates of completion. CLO provides a separate, paid certification exam; candidates who pass receive an official CLO certificate verifying proficiency in the specific version of the software used during the exam.