SAXX Size & Fit Guide

← Fit by Brand

Find SAXX men’s underwear and sleepwear sizing using waist and chest measurements in inches. Select boxer briefs or sleep pants by waist, choose sleep tops by chest, and check the product’s cut and leg length alongside its label.

Fit by product & style

Boxer briefs

Use the waist reference below. Ultra, Vibe and other product descriptions identify different fits and leg lengths; choose the cut as well as the size.

Sleepwalker tops & pants

Choose tops by chest and pants by waist. Our separate top table appears below; the general pants waist reference matches XS through XXL in the underwear waist table. Check the product for its own inseam.

Body measurement chart

Men’s underwear — body waist measurements in inches
Size Waist
XS 27–29
S 29–32
M 32–35
L 35–38
XL 38–42
XXL 42–46
3XL 46–50
4XL 50–54

Measurement reference: SAXX underwear fit guide. Only use the rows matching your product’s labels.

Sleep tops

SAXX tops — body chest measurement in inches
Size Chest
XS 33–35
S 35–38
M 38–41
L 41–44
XL 44–48
XXL 48–52

Measure around the fullest part of your chest beneath your arms with the tape level. Choose a sleep top independently from boxer briefs; chest and waist may indicate different labels.

Measurement reference: SAXX tops fit guide. Size availability varies by product.

How to measure & check fit

Use a soft tape. Measure the fullest part of your bust, your natural waist and the fullest part of your hips, keeping the tape level without pressing into the body. Tables labeled body measurements refer to you, rather than the garment laid flat.

Check fit while sitting, bending and reaching. Waistbands and edges should remain comfortable; sleepwear should allow movement. One-size and combined labels have defined ranges rather than unlimited fit.

Shop styles covered by this guide

Open your product to see its size options and fit notes. Listed size ranges do not imply every band-and-cup combination is available.

Need help with this style?

Send us the product name, your measurements, and the brand and size of a garment that fits you well. For bras, include snug underbust and full bust; for bottoms include waist and hips. We can confirm the cup convention and size range for the exact style. Contact our fitting team or learn about a LaBella bra fitting.