This is a J-TECH canteen set. I believe I bought it from Nakata Shoten about 10 years ago. I've taken it hiking several times. There are dents on the bottom of the canteen and the bottom of the cup. It can hold about 1 liter. The canteen and cup are made of aluminum. The cover has a waterproof lining on the inside. The waterproof treatment has not deteriorated. I liked it very much and it has a nice atmosphere, but I haven't used it recently and it's been gathering dust in the closet, so I'm offering it to someone who will use it with care. Capacity: 1-2.9L Military Canteen Aluminum bottle J-TECH