Material for Boys Briefs: cotton , modal, spandex to boys boxershort, keep him cool and comfy all day. Design for Boys underwear: Pattern include dinosaur, it's fit child interesting. Practicality: Kids underwear Strong seams for added strength and durability. Package included: pack of 8 pieces of Kids series colorful and fits 2-10 age kids. Warranty: 3 month, we will take full responsible for boys boxer briefs, if confirmer it's our quality problem.