It's not a be-all-end-all mattress, but it's pretty good for the price. I hope it'll last a long time, but I'm not sure it will ... no way to tell yet.
I can't rave about this mattress enough! Prior to Casper, sleep was a challenge. I would awake achy and not feeling rested. Now I'm sleeping more soundly, with fewer morning aches, and feel much more rested. Sad that I waited so long to buy this.