This bag was for three weeks in continuous use. It is processed very robust, convincing the materials. Humidity of the equipment is not a problem, the bag is ideal ventilated. It offers a lot of space, even for an adult equipment. I have each in addition to the NBC equipment mitgepackt still camera, towel, sunscreen, boots and neoprene. Since you can wear as a backpack, it is ideal if the entry space for the snorkeling trip is behind rocks or difficult terrain all modern conveniences, because then you have your hands free. The zippers go very well. The bag is worth its price and also looks stylish. I never go again without snorkeling.