King 4WD Premium soft tops have been developed with the most comprehensive engineering standards & requirements typically used for Original Equipment Manufacturers. Each aspect of the top has that extra step of detail done to ensure that your Replacement top will hold up to the harshest conditions, last the longest, fit the best and out performer any other top your considering in this class. Our 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. Test methods include Tensile MD & CD, Tearing Strength MD & CD, Adhesion MD & CD, Flex, Abrasion, Flammability, Crock, Stretch, Residual, UV and Cold Crack. Start 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.