The Sparco Dry-Tech Helmet Bag is designed to carry and protect both your helmet and Hans (or similar head & neck restraint) device. The innovative bag features a built-in USB powered helmet drying system that helps pull clean air through the helmet. The top of the bag is slightly ventilated to allow proper flow of air, and prevent growth of bacteria during storage. Constructed from a tough and water resistant 600 polyester fabric, with neoprene and synthetic leather inserts, the helmet bag also features an expansion zipper for larger helmets, and raised feet to allow for the proper flow of air.