Jeep JK Zip Down WindStopper For 07- 18 Wrangler JK Black Diamond MasterTopDue 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 Soft Top Fabric with an ultra clear press polished window, the Wind Stopper