The most convenient way to carry your bike. It takes only seconds to put the bike in the bag and sling it over your shoulder so that you can hop in an elevator. When you’re riding, El bolso rolls up to pack into its own bag that slings across your shoulders. One size fits all Dahon folding bikes. Customers can mail in their warranty registration card to: Dahon 833 Meridian Street Duarte, CA 91010 attn: Warranty