The 3 models I've purchased are not waterproof, unlike COMPACTOR covers that do not move in time. Within days, air penetrates and plumps the cover. This bomb and then force the black cover by holding clip type closure backpack. If you place the trunk between 2 shelves, once partially re-inflated, it forces the top shelf ... The handles are fragile and do not allow to carry the trunk once filled, the risk of yield. The side walls do not remain flat and a little yawn at the junction with the lid. Dust and cat paws can then invite ... I'm disappointed and would rather 1000 times totally reliable COMPACTOR.