Bought this because I was moving and my friend was using a flatbed to move my things. But for reasons I won’t mention, I couldn’t move in to my new place on the scheduled date so my mattress sat in a garage for a few days. When I took it out of the mattress cover, there was no dampness or dust! This cover is a keeper.I was moving a 17 inch deep mattress that had no built in handles. I took a chance and purchased this even though it said 15 inches deep. The quality was very good. The movers even slid it across a concrete floor and there was no damage to the cover or the mattress. I recommend this item, it worked for me.Great fit for the mattress. Waterproof material seems durable. Decent price as well. No worries, just go for it.Absolutely sealed....no bugs can get in!!I was disappointed because there is a large hole in the swan which prevents it to be waterproof and dust free.I used this product for my mattress that are in storage. And it was very easy to put them on.