Your child will take on their day in comfort with this 4-Pack of Hot Wheels Boxer Briefs. These classic-rise briefs are crafted from a soft year-round fabric with spandex for stretchy comfort. Plus they feature a full elastic waistband to help them find a secure fit. This pack includes four pairs of boxer briefs each featuring Hot Wheels logotypes and cars for fun flair. Boy s Sizes. Soft fabric with added spandex for all-day stretchy comfort.