Airrider.com has a nylon bag with a fleece lining. There is a slot on the bottom to put your chin strap through to lock it to your bike. The best way to find it on their web page is to use the search. Here is their description: The Air Rider Helmet Bag is made from top quality nylon on the outside to protect your helmet from weather, and fleece lining on the inside to protect your helmet from scratching. A heavy-duty plastic zipper locks your helmet securely in the bag and the two nylon strap handles make it easy to carry from place to place. $16.00
