The Proflex 345 Injected Gel Knee Pads Feature A Long Cap Injected With Gel And Pu Foam For All-Around Protection, Support And Stability. To Further Boost Comfort, The Bottom Neoprene Strap Is Perforated To Improve Airflow And Prevent Sweat Behind The Knees. The Non-Slip Rubber Cap Securely Grips Floors For Added Stability. The Buckle And Hook & Loop Closure Securely Attach To Keep Knee Pads From Sliding Around Or Coming Undone. The Stretchable Neoprene And Elastic Leg Straps Easily Adjust For A Custom Fit On A Variety Of Leg Sizes. Ideal For All-Day Knee Protection And Comfort On A Variety Of Worksites, Including Construction, Hvac, Flooring, Landscaping And More.