Feature●Nylon●THUNDERBOLT PRO: 2023 NEW RELEASE. DOUBLE GEL ULTRA COMFORT! Upgraded materials and super reinforced stitching. Made for long lasting comfort and protection. Heavy-duty breathable neoprene, ballistic nylon, and mar resistant cap.●NEW HEAVY DUTY NON-SLIP THUNDERSHIELD designed to protect knees and damage to clothing while preventing abrasions to surfaces. Protects against nails, screws, glass and debris.●ERGONOMIC DESIGN delivers extra comfort with twice as much soft gel core and thick engineered foam for superior protection.●PROFESSIONALS CHOICE for Work, Construction, Concrete, Tile and Wood Flooring Installers, Carpet Installation, HVAC, Gardening, Carpentry, Welding, Stocking Warehouse and Grocery Shelves, Mechanics, Airsoft, Tactical, Roofing, Tiling, and Cleaning●FULLY ADJUSTABLE quick clip fastening system gives secure snug fit for all-day comfort. Quick and easy to put on and take off. Will fit EVERYONE!Description