Tethrd Tripled the padding, added hexagonal gripping lugs, overlayed them with a slide-stopping rubber coating. Tethrd Engineered a raised honeycomb gripping surface to provide more bite and leverage during your hunt. There is an extra grippy rubber on the face to keep your knees right where you want them. The one-of-a-kind camo process ensures every single one is uniquely camouflaged. They&';re also light and small enough to pack in if you don&';t like wearing knee pads while walking.