Black PVC waterproof bag.
2 sizes available:
A first-price bag without frills but of good quality and which does the job well.
A 100% waterproof tube bag with folding / rolling closure, assembled seamlessly by HF welding.
The "Tube" design makes it possible to manufacture effective and inexpensive waterproof bags.
Closing is done by rolling the top of the bag tightly over 3 turns, then clipping the 2 buckles together to lock the closure.