I purchased this at a flea market, but it was too big for me, so I'm selling it. I have never used it. The following is quoted from the seller: Used only once. Retail price: 36,300 yen Cotopaxi's Alpa 35 backpack with a mesh back panel and various storage pockets. - Brand: Cotopaxi - Model name: Alpa 35 - Features: Mesh back panel - Storage pockets: Many mesh pockets 1100g Size: 56 x 30 x 25 cm Nylon, Polyester There are no noticeable stains. Will be shipped in simple packaging.