King 4WD (4 Wheel Drive) Premium soft tops have been developed with the most comprehensive engineering standards and requirements typically used for Original Equipment Manufacturers. Each aspect of the King 4WD (4 Wheel Drive) Premium soft top has that extra step of detail done to ensure that your Replacement soft top will hold up to the harshest conditions, last the longest, fit the best and out performer any other soft top your considering. King 4WD (4 Wheel Drive) Premium soft tops specifications on materials, thickness, weight, UV rating, glass, Velcro and stitching has been specked and tested to meet or beat all Original Equipment standards and follow the chemical coated fabrics and film association standard CCFFA, Society of Automobile Engineers SAE, Federal Motor Vehicle Safety Standards FMVSS. King 4WD (4 Wheel Drive) Premium soft tops test methods include Tensile MD and CD, Tearing Strength MD and CD, Adhesion MD and CD, Flex, Abrasion, Flammability, Crock, Stretch, Residual, UV and Cold Crack. King 4WD (4 Wheel Drive) Premium soft tops are made with the finest materials, process them through an automated cutting process to ensure its perfect every time and use seasoned seamstress to assemble the perfect top at the most affordable cost. King 4WD (4 Wheel Drive) Premium soft tops very simple installation allow for 1 to 2 Hours for Installation. Could be done sooner if you?re experienced with the removal and installation of your soft top.?24oz Marine Grade Water Proof UV Stable Two Layer Fabric, Pressed and Polished DOT Approved Flexible Glass, Marine Grade Stitching with Heat Sealed Seams, Bindless Self Correcting Nylon Reinforced Zippers, Industrial Grade Velcro Fiber and High Impact Plastic Anti Cracking Belt Rails.