This little number was inspired by racers wanting an out-of-the-way place to keep an active Spot beacon. It's also nice for other lsmall stuff you want close by hand. Loosen the bungees and stash a wet rain jacket or leg warmers quickly underneath the pocket. Flat - Gusseted flat style pocket with water resistant zipper. Ideal for thin objects but can expand enough to fit an ultralight wind jacket. Fabric is either diamond ripstop fabric (shown in picture) or coated nylon.