Sellstrom KneePro Ultra Flex III knee pads have been the industry standard for more than 30 years Simply the best knee pads made! The articulating hinged design ensures proper placement all day long – set them once and forget you are even wearing them Soft elastic, extra-wide woven straps with reinforced sewn ends are placed well above and below the knee – no Velcro, which contaminates over time Straps stay aligned with your legs in any position – will not bind behind the knee Built with strong, flexible hard plastic outer shells that extend well above, below and to the inside/outside of the knee for added knee and leg protection Metal rivet hinge ensures long lasting protection while kneeling or walking On the outside, pads feature a perfectly placed curved non-marking Grip Strip Grip-Strip designed for use in all applications without gumming up Grip Strips are easily replaceable On the inside, pads offer a long lasting 5/8” closed cell foam pad for maximum comfort and protection Sweat does not penetrate closed cell foam – lasts longer and won’t “stink” Our new KneePro Hybrid Ultra Flex III version offers even greater user comfort and protection through the use of a three layer, ¾â€ thick closed cell foam pad with built-in GEL packs – the ultimate in knee protection! Virtually indestructible – built for years of hard work and heavy use Specially designed Quick-Snap clips ensure quick and easy removal Comes in convenient, reusable mesh bag with one extra Quick-Snap clip Pads weigh only 9-Ounce each Straps, Grip Strips and speedklips are replaceable Excellent for welders, ship builders, roofers, construction workers, flooring installers and anywhere hard working knee pads are required