I have not plunged it into water so cannot attest to it being waterproof, but If I go swimming with it, I will update the review. Thick strong band that holds my 12 stone weight with no problem with no signs of strain. The picture did not match with what was sent to us! And it is such great support for my back. Fit was a bit larger than expected but they are incredibly adorable and they match with almost everything. Fits all of our shoes in the cupboard section, keys/dog leash in the drawer and looks better than the cheapo bookshelf we used to use in the same spot. Zum barfuß den ganzen Tag tragen sind die Schuhe eher nicht geeignet. The charge lasts pretty decent. My waist is a 24. They do fit just a bit big, so if you want them to fit snug go down a size.