Size Chart Best Practices for Activewear Shopify Stores
Stretch + compression + fit type. Activewear sizing rules differ.
The Activewear Triangle
Show all three: customer's body measurement (what they should measure on themselves), garment measurement unstretched, stretch percentage. Customer maps body → garment via stretch. Removes guessing.
Fit Type Labels
Compression — second-skin, sized at body or 1 size below.
Performance — close but not crushing, true to body size.
Relaxed/lounge — sized up half to one size for comfort.
Mark each product clearly. Same size label means very different fits across categories.
What to Add
Fit comparison ("similar compression to Lululemon Align"). Squat-test photos showing opacity. Inseam length notation (7", 21", 25"). Pocket positioning detail for utility.
FAQs
Activewear sizing different?
Yes — stretch + compression matters.
Body or garment?
Both, plus stretch%.
Activewear-grade sizing
Tailor Size Guide ships pre-built activewear chart templates with stretch + compression fields.