This backpack is reliable not only for summer mountains but especially for snowy mountains. I purchased it in April 2023, but in the same year, I acquired a backpack of the same size that I had wanted for a long time. After some deliberation, I've decided to let this one go. It comes with a backpack cover and a helmet cover. Used for 3 tent stays and 1 day trip. The roll-top design allows for easy packing and unpacking, and it was adaptable to changes in load. During activities, the front part can be opened for easy access to water and outerwear. Also, it was nice that it was lightweight despite the sturdy waterproof fabric. There are some minor scuffs on the front and lid areas (photos 3/8, 4/8). Because of the glossy fabric, they are not very noticeable. Insect repellent spray leaked in the pocket under the lid, causing a stain on the back of the pocket (photos 5/8, 6/8). It's on the inside, so it's not very noticeable. Other than that, I think it's clean, but this is just my amateur assessment, so there may be other oversights. I would appreciate it if those who understand this would consider purchasing it. Also, due to work, it may take 4-5 days for shipping, so please be aware of this. 【 Size 】 Capacity: 40L Size: 17~24x28x54cm Weight: 1330g 【 Material 】 High-strength nylon fabric Waterproof: 2000mm (Rainfall guide: Light rain 500mm, Moderate rain 2000mm) Equipment...Other Equipment...Other