Colour: Carbon Size: One Size. Code: UTBC4646.This product has 2, colours. This may vary depending on availability. You can find the other colors on Atlas For Men searching the product code:UTBC4646. 100% polyester Three main zip-up compartments Hidden front zip pocket Padded airmesh back panel Dual webbing carry straps Dimensions : 18.3 x 11.4 x 6.3in. Stormtech Adults Unisex Yaletown Commuter Backpack (Carbon) (One Size) - UTBC4646