Due to the aerodynamics of a Jeep, wind and rain flows over the top of the vehicle and back inside the cab while driving without a top or with a Bimini style top. This �backdraft� can blow air, rain and items inside the Jeep forward creating a real mess. The MasterTop Zip Down Wind Stopper creates a barrier to this back draft keeping the inside cab dry and warm. Constructed of Durable Original equipment approved fabric with an ultra-clear press polished window, the Wind Stopper is a must for those open air driving adventures. Each Wind Stopper easily attaches to the factory sport bar using heavy duty nylon straps and buckles. This ease of installation allows the Wind Stopper to be kept on the vehicle during the winter months keeping the warm air inside the front cab. This is the perfect all season accessory! Each MasterTop Wind Stopper features an exclusive zippered window for added airflow during those hot summer days. Only MasterTop Wind Stoppers feature a built in zippered rear flap that can easily be attached to a MasterTop Tonneau Cover for the ultimate summer soft top combination. Each Wind Stopper runs below the top of the body line except 4 door Wrangler models that come down to the optional Tonneau cover. This �abbreviated� 4 door version attaches behind the rear seat providing wind protection for both front and rear passengers. All MasterTop Black Diamond Wind Stoppers use up-graded 28 oz Sail Cloth fabric for the ultimate in durability and great looks. This is a MasterTop exclusive feature found in no other aftermarket summer soft top! Why MasterTop Wind Stoppers? In this highly competitive category, other manufacturers have reduced the quality of the fabric and designs to the point where it is almost impossible to find a Summer Accessory made with the original equipment fabric. In an effort to reduce cost (and unfortunately, quality), manufacturers have all gone to an imported very low grade of fabric. This inferior fabric does not match your soft top, rips easier and has inconsistent color and textures. At MasterTop we continue to provide the products with the quality you have come to expect from a premium manufacturer. We use only original equipment fabrics in our summer soft goods (excluding Shade Maker Mesh Products) to ensure you only get the best product available.