Backpack with valve

Orange and black bicolour backpack in Tarpaulin 500D, polyester fabric 500 g/m² with double coating.
Capacity 30L, dimensions (H unfolded bag x ø) 68 x 25,5 cm, weight 680g.
Very heavy duty for durability. Reinforced back and straps.
The valve allows to inflate the bag to make it buoyant or evacuate air trapped to optimize the volume of the bag in relation to its contents.
Waterproof seal by rolling (3 times) and clip fastener.