The OSPREY KAMBER 42 is a backpack designed for backcountry skiing, combining durability and comfort. - Brand: OSPREY - Model Name: KAMBER 42 - Color: Black/Blue - Size: (51.5cm) M This item was purchased and used for one day on a day trip, and has been stored since. If you purchase at the current price, I will include a free OSPREY Hydration Reservoir 3.0. This can be installed in the backpack (it shows signs of use). Thank you for looking.