Wiggle lists a large range of rucksacks, or backpacks as they are often called, these include traditional packs which are ideal for cycle commuters or mountain bikers wanting to carry larger loads. Some rucksacks / backpacks have the facility to fit a hydration bladder, making them a great choice for all day rides. Ideal for both on and off the bike, cross country riding, commuting or riding to the gym, a rucksack / backpack is the ideal choice for carrying items on you. Airmesh shoulder straps. Adjustable belt. Adjustable sternum strap with index. Compression straps. 1 main compartment, 2 mesh side pockets, 1 internal pocket, 1 trash pocket and 1 belt zipped pocket. Bladder compartment with hanging system. Custom system.