Brooks Saddles Challenge Tool Bag HANDMADE IN ENGLAND- Manufactured using 100 year old traditional techniques and the highest quality materials. INTERIOR BUCKLES- The saddle buckles are within the bag to prevent annoying vibrating. VEGETABLE TANNED LEATHER- Brooks only uses the finest European vegetable tanned leather for their bags, straps and accessories. SADDLE ATTACHMENT- The Challenge Tool Bag comes with two straps that easily attach to your saddle. INTERNAL STRAP- The strap that secures the unit encircles tools to prevent rattling