Men's Underwear Size Guide: How to Find Your Perfect Fit
Men's Underwear Size Guide
Buying underwear online is tricky — you can't try it on, and every brand sizes differently. Here's the short version: use your body weight to find your size. That's it. No tape measure needed.
In This Article
The Size Chart
Our sizing is based on body weight. Why weight? Because it correlates closely with waist size, and it's easier than trying to measure yourself with a tape measure. Underwear waistbands sit at a different height than where you'd measure for pants, so direct waist measurement can be misleading.
| Size | Weight (kg) | Weight (lbs) | Waist (inch) |
|---|---|---|---|
| XS | 45-55 | 99-121 | 28-30" |
| S | 55-65 | 121-143 | 30-32" |
| M | 65-75 | 143-165 | 32-34" |
| L | 75-85 | 165-187 | 34-36" |
| XL | 85-95 | 187-209 | 36-38" |
| XXL | 95-110 | 209-243 | 38-40" |
Note: Some products have slightly different weight ranges. Always check the size chart on the product page. Full reference table on our Size Guide page.
Body Type Tips
Weight gets you most of the way there. But a few body-type adjustments can help:
- Muscular/athletic: Stick to your weight size. The lace has stretch and will fit over muscle.
- Carry weight in the belly: Size up one. The waistband should sit flat without rolling.
- Slim build: Between sizes? Size down for a snugger fit that stays put.
- Tall (6'1"+): Briefs and bikinis work well. Thongs may sit higher than expected on longer torsos.
Sizes Available by Product
Not every product comes in every size:
- 001 Lace Brief — S, M, L, XL
- 002 Seamless Brief — S, M, L, XL, XXL
- 003 Seamless Thong — XS, S, M, L, XL
- 010 Leopard Thong — XS, S, M, L, XL
See all products on our collection page.
What If You Get the Wrong Size?
Don't stress about it. If this is your first order and you got the wrong size, just email us at hello@petalslace.com and we'll send you a free replacement in the correct size. You keep the original pair — no returns, no questions. Full details on our refund policy page.