Feature: 1. Main Function: the knee booster adds 40kg / 88.2lbs strength to the knees and reduces the pressure on the knees after squatting. The specially made spring has strong elasticity. 2. Adjustable: Universal strap style, adjustable tightness, the knee brace can be worn by men, women, and children, which can effectively reduce weight damage to the knees. 3. Breathable and Non Slip: The mesh is breathable and not airtight. The knee booster joint support is specially designed for people who do heavy work. The fabric is non slip, making exercise easier, work easier, and squatting easier. 4. Start to help at 45°: When equipped with a knee booster, the rebound booster starts to help mountaineering and carrying heavy objects when the knee is bent about 45°. For severe knee strain, 3 springs are recommended. 5. Application: The joint support knee brace is widely used in walking, climbing, running, cycling, etc. It is recommended to adjust 1-2 springs to help protect your knees when cycling. Specification: Item Type: Knee Booster Joint Support Material: Neoprene + Nylon + Polyurethane Product Color: Dark Green Product Size: Approx. 74.5x29.5x9cm / 29.3x11.6x3.5in Product Weight: Approx. 234g / 8.3oz Product Function: Protect knees from gravity damage, suitable for climbing, mountaineering, sports fitness, heavy work handling, etc.. Package List: 1 x Knee Booster Joint Support Note: 1. Please allow 1‑3cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.