This is a U.S. military-specification 2-quart (approx. 1.9L) soft canteen, a genuine item used by the U.S. military, manufactured in 2017 and marked with the SKILCRAFT stamp. It has markings that appear to be identification numbers and a date. The cap has a check valve structure, and it was originally designed to be connected to a gas mask, allowing the user to drink even in an NBC (nuclear, biological, chemical) environment. It is lighter than hard-type canteens and can be flattened when not in use, making it convenient for camping, airsoft/paintball gear, and collection purposes. ・As it is a U.S. military-used item, there are slight scratches and shape imperfections from storage on the main body (there are no cracks or major damage). ・Due to the check valve cap, the spout is narrower than a regular water bottle, and it is not very suitable for pouring water into a cup all at once. ・This item is being sold for collection and outdoor use only, and the original protective performance in an NBC environment cannot be guaranteed. Genuine U.S. military 2QT canteens with check valve caps are not widely available in Japan, and it is a very atmospheric item for military enthusiasts and camping lovers. It has a strong presence both as equipment and as a display item, so please add it to your collection at this opportunity.