Meet the Power Systems ProElite stability ball, a durable, non-slip exercise stability ball designed to improve balance, core strength, and posture. This balance ball for exercise uses thick, burst-resistant material with slow-deflate safety, making it a reliable exercise equipment ball for home gyms and studios. Choose 55 cm or 65 cm for a proper fit. Use it for stability balls for exercise routines—great for gym balls exercise drills, work out balls for exercise circuits, and exercise balls for working out at every level. Ideal for stability exercise balls moves like planks, squats, and bridges, it supports focused stability ball exercise and a challenging ball workout. The sturdy build also suits users who prefer large stability balls.