Trimfit Boys' 100 Percent Cotton Tagless Boxer Briefs 4-Pack 100% Cotton Machine Wash 4-pack boys boxer briefs with functioning fly, tag less feature and non-pinch elastic waistband Double-ply seams for added strength and seamless sides for a very contoured fit 100 percent cotton. Designed in usa Machine wash cold with like colors. Only non-chlorine bleach when needed. Tumble dry low. Do not iron trimfit wear tested since 1921