Ergodyne ProFlex® 380 Standard Foam Kneeling PadsProduct Details:Made with high density, thick nitrile rubber (NBR) closed cell foam rubber that will not compress over time, protecting knees against hard surfacesLightweight and has a built-in handle making it easy to carry and transport and convenient to hang and storeWater-resistant and petroleum-resistant construction make it perfect for everything from bath time to work in the garageDesigned for kneeling on cold surfaces, hard steel, concrete, grating, gravel and wet surfacesComfortable knee support without having to strap on work knee padsHelps protect against common knee injuries on the job by supporting knees and joints.