Feel free while sitting for long hours on the office chair by wearing Calvin Klein Underwear Calvin Klein 1996 Low Rise Trunks 3-Pack. Low-rise waist. Elasticated waistband. Sewn fly with outlet for convenience. Classic thigh-length legs. Printed allover. Materials:Main: 88% recycled polyester, 12% elastane;Lining: 58% nylon, 32% polyester, 10% elastane. Machine wash, tumble dry.