Designed for short day hikes, the Terra 1-Litre Bum Bag has a main compartment that holds larger items such as your phone, keys and wallet. The extra pockets on the inside and outside offer easy on-the-fly access to smaller valuables, while the adjustable webbing strap ensures a comfortable fit. And don't worry about carrying your rain jacket or other bulky items – there's external bungee storage to take care of that.