The ProFlex 575 Non-Marring Knee Pads are ergonomically constructed with a pre-curved design to keep protection comfortably in place whether walking, crawling or kneeling. Hard, nonmarring cap provides versatile protection on any indoor or outdoor surface no matter how abrasive or delicate. Lightweight knee pads also feature mesh paneling to improve airflow and reduce sweat, making for a comfortable, all-day use solution. For protection on both tough and delicate surfaces without risk of scratching or marring, the pads are made with 3 supportive and flexible layers. First layer is an abrasion-resistant thermoplastic rubber (TPR) for durability. Next is a thick, impact-absorbing EVA foam for protective support. Third layer is a gel-like neoprene comfort foam that softly cradles the knee for enhanced fit and feel. Wide elastic straps easily adjust for a custom fit on a variety of leg sizes. Nonslip silicone strip is built into the top adjustable strap to keep the knee pad in place when kneeling or on-the-go. Versatile knee pads are ideal for all-day knee protection and comfort on any worksite, including construction, aviation, maintenance, HVAC, flooring, landscaping, plumbing and more.