Stretch & Sew 1240; ©1975 & ©1979 (reissue); Men's Boxer Swim Trunks. Here is a little dressier look in our men's swim wear. These Boxer Swim Trunks included encased waist elastic, full lining and two optional pockets; one inside for keys, the other outside for keys and change. Fold-over swim trim around the legs can be extended up the side to give the look for a racing stripe.