I wear size 34 (USA) and ordered this trunks in medium. The fit perfectly (as I expected). The trunks exhibit excellent craftsmanship in terms of stitching and design. Have 3 pockets, one of them that closes with a velcro. I was surprised of how soft they feel even though they are 100% polyester. Seems a strong fabric even though it is thin so they would not absorb much water and still be light.