From the time I first learned about these almost 20 years ago, I NEVER buy a new mattress without buying these first. I am going from a Queen size bed to a full. The mattress is in a box unlike previous ones. It won't be coming either out until my cover arrives. I put this cover on BEFORE the others (kids beds too!) even came over my door step. I also recommended them to friends. Bed bugs- I'd rather prevent than treat. Thanks for such a great product