Marvel Spider-Man Print 3 Pack Boys Ultra Cool Softness Boxer Briefs Sz 4 NEW. This product is made of polyester and spandex, with a multicolor print pattern featuring Spider-Man. The boxer briefs are designed for boys and come in a size 4, with a total of 3 packs included. They are machine washable and feature moisture wicking and stretch, making them suitable for all seasons. The product is part of the Marvel brand and is perfect for any superhero fan.