Fabrics

Size Charts for Stretch Fabrics: Spandex, Jersey & More

Master the unique challenges of sizing stretch fabrics for activewear, swimwear, and casual wear.

Stretch Fabric Sizing Guide - Spandex, jersey, and elastic materials

Understanding Fabric Stretch

Stretch Level Percentage Common Fabrics Typical Use
No Stretch0%Cotton, linen, denimStructured garments
Low Stretch5-25%Cotton/spandex blendCasual wear, jeans
Medium Stretch25-50%Jersey, ponteDresses, casual tops
High Stretch50-75%Lycra, nylon/spandexActivewear, swimwear
Super Stretch75%+4-way stretch spandexCompression wear
How to measure fabric stretch percentage - ruler method illustrated
Measuring fabric stretch percentage

Size Chart Tips for Stretch Fabrics

📋 What to Include

  • Fabric content (e.g., 80% Nylon, 20% Spandex)
  • Stretch percentage or description
  • Unstretched measurements clearly labeled
  • Body measurement guide for comparison
  • Fit description (compression, fitted, relaxed)

FAQ

How do you size clothes with stretch fabric?

Stretch fabrics often use negative ease. Include stretch percentage and note measurements are "unstretched." Recommend sizing based on body measurements.

What does fabric stretch percentage mean?

How much fabric can extend. 20% stretch = 10" piece stretches to 12". Low: 0-25%, Medium: 25-50%, High: 50%+.

Should I size up or down in stretchy clothes?

Compression/activewear: true size or down. Casual stretch: regular size. Between sizes in high-stretch: size down.

What is negative ease?

Garment is smaller than body—fabric stretches to fit. Common in activewear. A swimsuit might have -2" to -4" ease.

How do I measure stretched vs unstretched?

Always list unstretched measurements. Optionally include max stretched. Label: "Flat, unstretched. Fabric has X% stretch."

Create Activewear Size Charts

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