I bought one Geyser Litli pair. Unfortunately, the product didn't meet the expectations nor did the support given. Within a few uses (3 or 4) of the Geyser Litli, the side material got cracked/severed on the stitched/glued part of the shoe. Basically, the top part of the shoe is detached from the shoe sole. This, in my understanding, is due to lack of flexibility of the material. A probable downside of the waterproof concept. Obviously, it is no longer waterproof with cracks. I contacted support to understand what could be done regarding the warranty and the reply was of putting and confusing. Even though the email was signed by the same supporter, one email was detached from the next one.