This is a Seibertron tactical backpack, popular among camping enthusiasts and used by Hiroshi, known for his camping videos. Purchased from an authorized retailer in November 2024. The main compartment was used twice, and the side pockets were used about five times. The reason the main compartment was only used twice is because it felt a bit heavy to me when carrying it with the side pockets attached. The side pockets were convenient to use on their own, so they were used more often than the main compartment. After separating them, I used the main compartment as a packing cube inside my suitcase. Both show no noticeable stains. Thank you for your consideration! ^_^ Seibertron Backpack 3P Tactical Backpack with 2 Side Pouches, Waterproof, Lightweight, Hiroshi's Model, Bushcraft, Outdoor, Camping, Assault, Military, U.S. Type, Rucksack, Daypack Main Material: Waterproof 900D Note: Zippers are not water-resistant. 37L Backpack Body External Dimensions: Approx. 48cm(H) x 27cm(W) x 27cm(D), Waist Belt MAX: Approx. 114cm, Chest Belt MAX: Approx. 152cm Molle Specification Side Pouch 33(H) x 12.7(W) x 10(D) 2 included The side pouches are detachable and very convenient. Suitable for various scenes such as camping, bushcraft, military hobbies, excursions, hiking, sports, mountain climbing, and club activities. This is a standard product also used by Hiroshi, famous for his camping videos.