Jump into action with soft heavy-duty PVC plyo boxes. Plyometrics or jump exercises are the next step in strength training for speed, agility and power. Build endurance with shorter plyometric box layers and high reps, or train for explosive power by progressing up the heights. CATCH Fitness plyo boxes are made for sturdy footing, soft foam for landing and easy to attach or disassemble velcro straps, for every level of jumper.