The GSI Outdoors 79346 Boulder 10 Lightweight Ruggedized Hip Flask in Grey is a durable and convenient flask perfect for outdoor activities. Made of co-polyester resin, this flask features a screw-on lid and is designed to be both reusable and refillable. With a volume of 10 fl oz, it is compact in size with dimensions of 3.7 inches in length, 6.5 inches in height, and 1.1 inches in width. The lightweight design at 4.1 oz makes it easy to carry around, making it an essential item for camping trips or hikes. Made by the trusted brand GSI Outdoors, this flask is a reliable companion for any adventure.