Material:100% cotton,Machine wash,easy to wash,boys briefs Cloth material is very soft and comfy..Available in the following kids size: 2-3T (2-3), 4T (3-4), 5 (5-6), 6 (6-7), 8 (7-8), 10(9-10), 12(10-12)..Breathable, thread does not stick, no smell,we offer this boys underwear made with super soft fabrics from brands..Elastic waistband is very flexible.Reinforcement design at the edge to Prevent deformation..We provide After-sales Service,If have any quality or size issue,pls contact us Soon,we will arrange replacement or refund to you.