I have had a memory foam mattress before (from the company beginning with T). It cost a fortune so I was wary when I bought one from Hypnia. I had been suffering with aches in my hips and shoulder. Not now!! We’ve had this mattress for 3 months ish and it’s brilliant. Delivery was spot on and came 3-4 days after ordering. It does need some time to grow once it’s out the box. Maybe a few hours as they compact it in tight. It also needs airing as it can smell like plastic for a day or too as it’s wrapped in polythene. Overall though, very happy with the product and would buy again.