Calvin Klein Boys 2 Pack Modern Cotton Boxer Trunk, in Ash Grey and Heather Grey, with striking Burgundy waistbands Great Value 2 Pack Calvin Klein Modern Cotton logo waistband Made from breathable cotton to ensure comfort and durability Fabric Composition: 95% Regenerative Cotton / 5% Elastane MPN: b70b700490-0ue Our Collection at Boxers and Briefs contain only the highest quality Calvin Klein Boys Underwear. One of our most popular ranges is the Calvin Klein boys Modern Cotton range. The Modern Cotton range of kids' underwear features the iconic Calvin Klein logo and is made from breathable cotton to ensure comfort and durability. In this range we have the Ash/Grey Calvin Klein Boys 2 Pack Modern Cotton Boxer Trunks, which are available in sizes Medium, Large, and X-Large (ranging from ages 10 to 16). Calvin Klein Boys Underwear Size Guide: Age 8-10 = est. height 128-140 cm, Age 10-12 = 140-152 cm, Age 12-14 = 152-164 cm, Age 14-16 = 164-170 cm