Find Your Fit
Size Guide
Get the right fit the first time. Every piece has its own chart. Not sure? Use the calculator below.
Select a Product Category
Shirts
Athletic FitSize Calculator
Find Your Perfect Size
Enter your body measurements below and we'll recommend the best size for you.
How to Measure
Get Accurate Measurements
Chest
Wrap the tape measure around the fullest part of your chest under your arms. Keep it level and snug but not tight.
Torso Length
Measure from the high shoulder point down the front of your torso to where you want the garment to land.
Waist
Measure around your natural waistline just above the belly button. For shorts use your normal numbered waist size.
Inseam
Measure from the crotch seam of a well-fitting pair of pants straight down to the bottom of the leg opening.
Fit Guide
Athletic vs. Relaxed
Athletic Fit
Our standard fit. Designed for a clean, athletic fit with unrestricted movement.
- True to size. Order your normal size
- Slightly tapered through the body
- 4-way stretch for full range of motion
- Best for gym, active days, and casual wear
Relaxed Fit
Prefer a looser fit? Size up for a more relaxed, easy-going feel.
- Size up one from your normal size
- Extra room throughout
- More relaxed drape and feel
- Same premium poly-spandex fabric
- Best for pre- and post-training, weekends, and layering
Pro Tips
Sizing Advice From Our Team
- 01 Choose by fit. If you prefer an athletic fit, stick with your standard size. For a more relaxed feel, size up.
- 02 Follow the right chart. Each product has its own fit specifications for the most accurate guidance.
- 03 Measure a favorite. Lay your best-fitting garment flat and compare it to our size chart - it is the most reliable way to dial in your fit.
Fit Notes
How Each Piece Fits
Fit and sizing for every style, straight from its product page.
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Athletic fit, side-seamed construction that holds its shape
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Athletic fit
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Athletic sleeveless cut, hemmed armhole edges
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4-way stretch
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Tapered athletic fit
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Athletic fit
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Oversized, dropped shoulders
Between Sizes
Not sure which size?
Athletic pieces are true to size. Between sizes, size up. The Mainstay Hoodie runs roomy. Between sizes, size down. Shorts come in numbered waist sizes, 30 to 40.
Free Exchanges
Wrong size? Swap it.
Exchanges are free. If the fit isn't right, start an exchange for another size.
