Painful knees and joints causing your steps to feel heavy and burdensome? Our premium J iloint Support Knee Booster supports your thighs and calves and speeds up your recovery from injuries. Adapts patented spring-loaded technology, our booster is proven to absorb up to 20kg (44lbs) of joint pressure while returning that energy to power your leg muscles, helping you do more than you ever thought possible. Lightweight and breathable design allows effective assistance while being comfortable to wear. Adjustable cushioned straps secure the pads firmly to your knees while fit seamlessly under your clothes, giving no indication of the extra.