Roll-top 100% waterproof backpack - Class 3 - IP66. Floats safely if dropped in water. Protects contents from dust, sand, dirt and water. , High Visibility PVC so can be seen day or night. 2 x Reflective strips on the front and both shoulder straps. Top carry handle. LED light attachment loop. , 2 way sealing system (traditional top or side compression). Super tough material on side and base. High Frequency welded construction. 2 x Large outer elasticated mesh side pocket. , Ventilated back panel with air-flow design. Comfortable and buoyant light-weight straps with ventilation system. Adjustable waist strap and sternum strap with emergency whistle buckle. , D-rings for multiple attachment options. Quick release elasticated webbing. Internal zip accessories pocket - H: 25cm x W: 21cm.