Calvin Klein Modern Cotton Stretch 3-Pack Trunks, in Black, Rusted Root burgundy, and Rock Ridge grey. Pouch front. Organic cotton. Striking Calvin Klein Modern Cotton logo waistband in contrasting white. Fabric Composition: 57% Organic Cotton / 38% Modal / 5% Elastane. MPN: nb3963a-pt1. This 3-pack of Calvin Klein Boxer Trunks comes with contrasting white waistbands.