The Adidas Youth Boxer Brief Underwear 4-Pack in size M is designed for active boys who want to perform at their best. Made from a blend of polyester and spandex, these boxer briefs offer a quick-dry feature and stretch for comfort. With a solid blue color and sporty theme, these underwear are perfect for young athletes looking for reliable and stylish undergarments. The 4-pack ensures that boys have plenty of options for their athletic wardrobe, making them a great choice for kids on the go.