Made From an Extremely Elastic Blend of Nylon, Spandex, & Latex That Contours to Each Knee Offering Support & Compression Where You Need It Most. Silicon Lining Ensures a Non-slip Grip. the Knee Sleeves Will Help Minimize Pain & Inflammation When There is a Build-up of Fluid in the Joints From Excessive Pressure & Stress. Theyre Extremely Beneficial When Working Out, as Heavy Lifting Adds a Significant Amount of Weight to Your Already Stressed Joints & Muscles! Wear Them Post-workout to Assist in Recovery by Regulating Blood Flow & Maintaining Muscle Warmth.