I bought the medium size of this product and wear JC Penny Stafford Essentials waist size "34" ("Classic Fit") underwear, and the medium size of this fruit underwear is about the same size, maybe a tiny bit smaller,  although I have not laundered it yet and the Staffords are years old (elastic might be worn a little on them).

The thickness of the material might be a tad thinner than Stafford Essentials underwear but not a big deal I don't think, and these were cheaper than buying more Stafford underwear. The material in the front is thickest.

Will leave comments if they start to wear out or shrink too much after hot water + bleach like I usually do with the Staffords.

Nice Cuppage and room for growth too.