I've summited Mount Fuji many times with this backpack, but I haven't used it in the last few years, so I'm putting it up for sale. It shows some signs of use, but it still seems to be in good condition. ■Brand: MAMMUT ■Category: HERON CREST 30 (Backpack, Rucksack) ■Color: Red x Gray ■Size: 30L There are no tears or zipper malfunctions. I only used it 3-5 times for climbing Mount Fuji, and it still holds its shape well. This lightweight backpack fits the body well and is easy to move in thanks to the adjustable back size / It also has good breathability (3-DEVA foam, air channel) and is comfortable even when you sweat.