The karrimor refuel 152 daysack is a lightweight hydration bag designed for running cycling and walking and comes with a 2 litre hydration system to ensure that you are kept hydrated while you are on the go the refuel range comes in different sizes and the 152 litre one has enough space for all your outdoor essentials including a front mesh pocket that is ideal for your helmet or for stuffing extra layers in and offers a lightweight and comfortable carry thanks to the coolmesh contact and refu