They fit well.

Men's XL in these is equivalent to an American size M. If you're over a waist size of 32 US, get the XXL. Sounds crazy but believe me it very true.

I'm a small framed male, 5' 5" of 138 pounds. I ordered the MEDIUM and the fit is perfect after a wash and dry. I like my undies to fit snug, but not tight. I got tired of the choices in the 'big-box' stores, ... the waist band would ride to high, ... bulk in the crotch, especially if one is wearing low-rise pants. The "Jockey" brand micro briefs are decent, but would wear out fast, due to the weave of the cotton material. Two years ago I looked into something different, ... asking myself, "Why shouldn't I feel as sexy as any female with what I wear for underpants". I ordered another brans of similar design and material, ... they are still going strong, and I suspect these will do the same.
The construction is very well done, and the material though NOT SILK is actually better than silk, as I've tried silk bikinis, ... they don't breath like these. Silk is great for absorbing moisture as a hiking inner sock with boots for 'whipping' moisture, but not really practical for underwear for an all day wear. These are the next best thing. These are not really a 'micro brief', but they certainly feel like it. These are a decent low cut bijini, on a high cut style in the hip. The fit across the butt (at least mine) is taught and without excess of material bunching between the buttock and thigh. The cut is actually quite lean across the glut area, ... riding in upon the butt cheek when compared to other bikinis on the market. The cut is trim, ... in the backside anyway. As for the front support, it's there, and there is sufficient room for 'the boys' to breath, and feel super -sexy at the same time for the ladies, no matter when you wear 'em.. These are simply HOT,HOT,HOT!. Try apair, or two, or three, ... you'll ask yourself why you waited so long to get brave within yourself. These aren't 'panties' for men, ... those are out there for the taking. These are made for males who simply want to take and feel, a different route within our todays social programming wothin our society. Be brave, try them out. The price is great and you won't be sorry you did.

Awesome

No stretch or give in these what so ever. Could barely get them on.