Thank you for viewing. - Brand: deuter - Model Name: raceXair - Capacity: 12ℓ - Color: Blue (Steel x Ocean) - Features: Mesh shoulder straps - Features: Excellent back ventilation - Features: Hydration system compatible - Features: Includes rain cover Weight: 780g (actual measurement) Size: H44 x W24 x D18cm I used this for cycling. The mesh back kept me cool and prevented my back from getting sweaty with the backpack. The side elastic has become a bit worn, but it's still usable. (Please refer to the images.) This is a used item, so please refrain from purchasing if you are concerned. Thank you for your consideration.