The dry sacks are made from water-resistant polyester taffeta material and featured with roll-top closure to keep your valuables dry, perfect forkayaking, fishing, backpacking, traveling. Features: Pack of three dry sacks in different sizes, including 3L, 7.5L, 22L. Made from 190T polyester taffeta, lightweight, water-repellent and durable. Roll-top design with buckle closure keeps your valuables dry. (Not for full submersion.) Comes with an adjustable shoulder strap to use the dry sack as a shoulder bag and free your hands. Good for outdoor activities such as kayaking, fishing, backpacking, traveling. Specifications: Material: Polyester taffeta 3L: 19.5 * 32cm / 7.7 * 12.6in; weight: 26g / 0.9oz 7.5L: 24 * 38.5cm / 9.4 * 15.1in; weight: 31g / 1.1oz 22L: 27 * 57cm / 10.6 * 22.4in; weight: 42g / 1.5oz Shoulder Strap: 70 - 122cm / 27.5 - 48in Package Weight: Approx. 110g / 3.9oz Package List: 3 * Dry Bag (3L, 7.5L, 22L) 1 * Shoulder Strap