Black Thermal Cover For Cold Air/Short Ram Intake Pipe Thermal Engine Bay Sock Reviewhttp://tinyurl.com/kdg2qqf Black Thermal Cover For Cold Air/Short Ram Intake Pipe Thermal Engine Bay Sock Purchase includes one (1) snuggie.Covers are 7 inches long (178mm).Fits up to 4 inch (102mm) diameter air intake pipeFor longer intakes please purchase multiple snuggies.Due to the length of most intake pipes, we HIGHLY recommend buying at least 2 pcs