Quadra Apex 20 Litre Daypack QX520 Quadra SLX 20 litre dayback is ideal for walking trips as it comes with a detachable waterproof rain cover. It also holds any laptop up to 15.6" and has padded shoulder straps, adjustable waist and chest straps, padded mesh back panel, hydration bladder compatible. Product Features Laptop compatible up to 15.6" Hydration bladder compatible Detachable waterproof rain cover Trekking pole attachment points Back light attachment loop Key hook Compression straps Padded adjustable shoulder straps Adjustable waist and chest straps Ergonomic breathable padded mesh back panel Reflective accents Zippered front pocket Elasticated mesh side pockets Zippered side pocket Internal mesh pocket Ergonomic breathable padded mesh back Padded shoulder straps Adjustable waist and chest straps Grab handle Dimensions: 48 x 31 x 20cm Capacity: 20 litres Maximum embroidery: 15 flat bed hoop Maximum print area: 18 x 14cm Also available in a 10 litre capacity code QX510 and a 30 litre capacity code QX530