EVOC Hip Pack Pro 3L Waist Bag Bum Bag Carry Bag (28 x 18 x 8 cm, 1.5 L Hydration Bladder, Airflow Contact System, Airflex Waist Belt, 2 Bottle Holders) Ventilated High-Tech Carry Bag which keeps the back free. Except enough space for a hose, some tools, water bottles and a 1.5 litre hydration bladder, the hip bag offers a sophisticated system for a plus in terms of comfort: our Ventapap. When ascending the distance to the back is increased and the belt bag is tightened around the hips for the way to the valley - simply pull on the strap, done! Material: 3D air mesh: this three-dimensional structured fabric with different thread thicknesses (P75D x 30D) offers optimal ventilation and padding properties for back parts and shoulder straps. AIRO FLEX: This nylon fabric (herringbone band) is characterised by great flexibility and high material stability with particularly good air permeability. Thanks to this combination, it is the optimal material for processing in our highest quality hip belts. N210 D Ripstop PU coated: The requirements for the perfect outer material for backpacks can be summarised in four features: durable, abrasion-resistant, water-repellent and light. That's exactly what Nylon 210/D Ripstop offers. A quadruple PU coating of the lightweight nylon base material provides moisture protection and abrasion resistance. A micro-fabric of fibres divides the base material into square segments to prevent the expansion of cracks - hence the name Ripstop. Features: Airflow contact system for perfect ventilation of the back, AIRO FLEX hip belt for best hold and maximum ventilation, 2 bottle holders with additional safety fixation, including hydration bladder, 1.5 litres.