Real ultralight!! But not super waterproof., perhaps decathlon can tweak a bit better
Response from Sport Leader
Thank you again for leaving us 5 star review. This product is a compact and waterproof spare backpack that folds up on itself and fits in the pocket of another backpack. It is the ideal solution for your short excursions. For the waterproofing part, the backpack is designed in a fabric with a 2000 mm waterproof coating and 100% of the seams are waterproof in order to avoid water ingress. We have chosen a rolling closing system like what is on the canyoning backpacks. As such there is no risk of the water going through a zip for example. The "canyon" type fastening is the most effective to stop water from getting inside the bag.
We are looking forward to more reviews and point of improvement for us from you. Thank you!