This is a CRUX backpack made with water-resistant material. - Brand: CRUX - Model Name: RK20 - Color: Black I purchased it about 2 years ago and used it a few times in the snow mountains. It has not been used in canyons or similar environments. I am selling it because I bought a larger size. Size: Regular Back Length: 48cm Recommended Height: 155-175cm I stored it for several weeks with ice axes attached, and during that time, white marks remained on the surface. There is no problem with its use, but please check the photos before considering. Additionally, there are some pilling and scuff marks (4x1cm) on the hip belt. Please check the manufacturer's website for specifications and details. Please consider this item after understanding that it is used. No claims, no returns, please. Material: Waterproof Size: 11-25 L