ToBeInStyle Boy's Pack of 6 Seamless Boxer Briefs Thick Stripes Pull On closure Stock up on these 6 Pairs of cool and stylish Boys Boxer Briefs, and your kids will be in complete comfort. Sizes: Small (Ages 4-7), Medium (Ages 8-11) and Large (Ages 12-14) 90% Nylon 10% Spandex Machine wash warm; tumble dry Orange/Aqua, White/Light Blue, Green/Navy, Powder Blue/Navy Blue, Turquoise/Black, and Red/Navy.