Description:Durable & Lightweight: High quality polyester and 500D PVC material, waterproof and durable.2 styles shoulder strap: Single shoulder carrying for 5L/10L and Double shoulder carrying for 20L to meet all your demands on different occasions.Waterproof: Roll top and water tight seal closure keeps your stuff dry.Easy to carry: Can be a backpack, shoulder pack or tote bag; adjustable and wide straps for comfortable use.Wide Applications: Suittable for storaging clothing, book and money. Great for sailing, rafting, camping, hiking, kayaking, boating, fishing and other outdoor activities.Specification:Material: Polyester, PVCSize Chart:Expanded Size: 1955cm/7.4821.65inchTiled Size: 29.540cm/11.6115.75inchFolded Size: 1940cm/7.4815.75inchPackage Includes:1 Piece Waterproof Dry BagNote:Color might be slightly different due to the color calibration of each individual monitor.Please allow slightly measuring deviation due to manual measurement.