These and the Clarity are IPX5 rated and the Isports are IPX8 rated. These are super, super lightweight. While a 5. I really am impressed with the items Ive recieved. I played this for a few nights and each time of 4 hours only removed about 15% of the battery life. The make the most powerful and durable products. If you have a shop that is tough on caster wheels for tool boxes or other equipment, these are for you. I feel I will break the bolts if I keep tightening it, so at this point, not sure if its going to work or not. But now there is a funk smell by the door because the wood is absorbing the smells. I ordered a size Womens 10-11 which should have fit since 11 was and is usually too big, but I wanted them to be bigger intentionally in case my feet swell up.