55cm gym ball is designed to activate your glutes and increase resistance to exercises such as squats, hip thrusts, abductors and much more!
-> core strength: ideal for strengthening core muscles and improving balance. great for various workouts -> slip-resistant and sturdy: made from high-quality slip-resistant material.
-> anti-burst: durable and safe
-> easy to inflate: includes an extra air plug and an easy-to-use foot pump, making inflating simple and fast