This was a bespoke piece for a gentleman online, as a Christmas gift for his girlfriend. He wanted a yoga mat to be able to be carried along with the bag. The Manduka yoga mat is *very* heavy, and I’m incredibly pleased with how well it rides on the bag; all the weight is on the saddle loops. Features a quick-release system similar to Brooks’. For reference, this is a $300 bag, and has (obviously) been sold.