Day GW No Rain Bum XL
In this Day GW No Rain Bum XL oversize bum bag you can store all of your essentials. It's designed with two large compartments, which can fit a water bottle, phone, keys, camera and much more. The bag is made in a water-repelling material and also has a waterproof zipper, so you can use it in every kind of weather. It can last during 2100mm of water column pressure. It is easy to adjust the strap, so you can get the perfect fit.