Crystli King Mattress - 10 Inch Hybrid Memory Foam & Innerspring Mattress in a Box - Pressure Relief & Support for Back Pain - King Size Bed with 100-Night Trial & 10-Year Warranty - Perfect for Master Bedroom, Guest Room & Apartment Sleeping

I did my research on mattresses in a box before deciding on this one, and I will admit I was still hesitant about moving forward with the purchase because I've never bought one of these before. I chose this mattress due to the hybrid construction and the 100 night guarantee, and the reviews seemed really solid. I purchased the 10 inch twin size. It arrived on time, was easy to get into the house and a breeze to open. Immediately upon opening the plastic wrap and unrolling it, the mattress starting inflating in size. Within 10 minutes, it was already at 10 inches, so I was pleasantly surprised. It is easy to move, at least in the twin size, so it can be put on a foundation and taken off easily. The top cover is very nice and overall, the construction is solid. It is a medium firm mattress, so if you're looking for a soft mattress, this isn't it. Of course, all mattresses require a breaking in time, so I expect in a few months, this mattress will be a lot softer. I actually bought a 2 inch memory form topper for it for extra cushion and that helped immensely with the comfort level until at least I have it broken in more. Overall, I am very happy with this purchase, especially for the price, easy of set up and quality. It remains to be seen how this mattress will perform over time, but so far, I really like it. There are so many mattresses in a box out there to choose from and it can be overwhelming. If you'd looking for an good, solid mattress on a bit on the firmer side for a good price, this is it. I'm pleased with this purchase.