Unboxed as soon as it arrived and unzipped the mattress cover to give the mattress every opportunity to expand properly. I have purchased 2 of these and soon to order a third. Both expanded the full 10 inches and have never failed after nearly a year of constant use. No complaints from any one that has slept on them. They are firm/ish but I prefer that.
Worth every penny
Unboxed as soon as it arrived and unzipped the mattress cover to give the mattress every opportunity to expand properly. I have purchased 2 of these and soon to order a third. Both expanded the full 10 inches and have never failed after nearly a year of constant use. No complaints from any one that has slept on them. They are firm/ish but I prefer that.