I used these when I was doing a bit of marathon running and mountain climbing. I haven't worn them many times, but they were worn during sports and have been stored at home, so please refrain from purchasing if you are sensitive to this! Please be sure to read my profile. ◎ Nike DRI-FIT Shorts, size M The original thick elastic waistband may be loose, or perhaps it doesn't tighten much, but the waist is large, so I used to wear them with the drawstring pulled tight. ◎ UNDER ARMOUR Shorts, size M DRI-FIT material, gray and yellow shorts. Thank you for looking.