How to choose the size of men's underwear?
First of all, men's underwear should be loose, not too tight. It should be made of pure cotton. If he often wears tight pants, he should choose the legged ones, so that there will be no trace from the back. If he often wears Western pants, he should choose the triangle ones, so that it won't be very hot in summer. In terms of size, the smallest size for men is s, the medium size is m, and the large size is L. adults generally have more m and L. I also have to choose according to the waist circumference. If it's two foot five or six, I think l size is OK. Otherwise, I have to choose XL or XXL. The biggest one is XXXL. Try to choose the same color as the pants he often wears, so as to avoid embarrassment.