Montbell Flex Water Pack, brand new and unused. Can be frozen and used. By attaching a separately sold Montbell water filter, you can secure drinking water even outdoors. I am listing it for sale because my usage schedule has been postponed. Immediate purchase is OK. Please note that returns are not accepted. Please refrain from price negotiations. 【Compact and Lightweight】 Montbell's Flex Water Pack has a 1L capacity while being very lightweight and convenient to carry. It is ideal for outdoor activities such as mountain climbing and camping. 【Convenient Graduations】 The bottle has graduations, making it easy to check the amount of water. There are 500ml and 100ml graduations, so you can accurately measure the required amount. 【Durability and Flexibility】 Made of flexible material, it can be stored compactly after use. Even when filled with water, it is easy to handle. - Brand: mont-bell - Capacity: 1L - Graduations: 1000ml, 500ml, 100ml - Portability: Handheld size - Type: Flex Water Pack