This Ratio 18 Daysack is perfectly proportioned for carrying all of the supplies you will need for a basic day's hiking. With 18 litres of capacity, you have room for your map, compass, lunch and even a jacket if necessary. Complete with an AirMesh padded back system and shoulder straps, the pack will provide all day comfort whilst exploring the outdoors. Foam injected AirMesh padding shoulder straps - provide ultimate comfort AirMesh padded back Adjustable shoulder straps Hydration compatible  Nylon stretch mesh side pocket Side webbing compression straps Reflective strap at bottom for a bike light Webbing waist belt - for comfortable carry Main compartment with document holder panel on rear wall Internal key clip Front zipped compartment Made with 100% Certified Recycled fabrics Volume: 18 Litres Size: 22.5 x 17.5 x 42.5cm Weight: 0.41kg Fabric: 100% RPET / 600D polyester / PU coating Lining: 100% RPET / 210D polyester / PU coating Colour: Blue