The Hatchet bag, made from PTU is resistant to: water, abrasion, both high and low temperatures and therefore suitable for sea, mountain and city use. The stitching is thermo-taped, it closes using a wrap-over system, which means it is not only possible to isolate it from water, but also to change the size of the backpack itself. It has an antislip shoulder strap, central and side handles. External appliquéd pocket with zip and an additional net pocket. Laser cut lettering. Color: Grey / Red Dimensions: 62x35x28 cm. Features: Advanced Tehnology Fabric This brand name is used for a range of different fabrics that share the same. characteristics: They are all waterproof, windproof, breathable and thermoregulating. Waterproofing Resistance to water is expressed in millimetres, which represent the height of the column of water wich the fabric is able to whitstand during laboratory tests before allowing liquid to penetrate.