1 Pair Upgraded Knee Protection Booster Breathable Joint Brace Knee Pad Mountaineering Squat Protector.    Special plated spring, no rust,  3D breathable non-slip fabric, not sweltering when used,  One Size Suits All. Adjustable length to fit all people's legs,  Powerful Rebound Spring Force. Upgraded version with 4 strong rebound spring can lighten about 40kgs from your own weight Makes you feel light, allowing you to lift each knee easily as you go along with your activities.  Useful & Freedom. The Joint Support Knee Pads will not restrict your movements and lets you do any physical activity with ease. The padding are perfect for when you're walking up or down an incline. When walking on the ground, the knees will not bend a lot, so the effect is not very good. Suitable for all sports activities that involve a great amount of stress on the joints like: running, basketball, soccer, football, golf, cycling, tennis, hiking, volleyball, skiing and so on.  This pair of knee pads is a breakthrough product, it can reduces inflammation/swelling,soreness,stiffness, has heating effect for muscular recovery.For the old cold legs, there is also a deep care effect, which is a good gift for the elderly.    Specification: Material :Leather, spring , diving cloth + jacquard cloth, Size:17.5 x 71 x 31cm/ 6.89 x 27.9 x 12.2inch    Package included: 1 x Pair Knee Protection Booster