The COREFX 3-In-1 Plyo box is perfect for Crossfit and Plyometric workouts!The 3-In-1 Plyo box has been built solidly like a tank that has been completely sanded and built of high-grade plywood for maximum strength. With its slip-free top you can jump off our plyoboxes with confidence at your chosen heights without worrying about accidental slips during your workout!