I had to air the mattress out for a bit longer than I was expecting (better part of 2 weeks, with box fan removing air several hours per day). When I did settle in, I have had great sleep, since day one. It is very comfortable, supportive yet soft. I am happy with this purchase!
Best mattress I have ever owned. I recently moved into a NYC loft studio which only had room for a small Twin XL mattress. As I am a larger individual (6 ft, 260 lbs) I was not looking forward to downsizing from a Queen. However, my new Casper is so supportive and comfortable, I don't need the extra room - I wake up in the exact same position I fall asleep in - no more tossing and turning!
Prior to dating my wife, I had bought a King size mattress with firm support. Unfortunately, while it did a great job the majority of the time, the other portion made it difficult to fall asleep in different positions. Fast forward to a few short weeks ago and we now have a Cal King Casper mattress and couldn't be happier. It is firm while remaining soft. You can be warm without getting sweaty. And I can finally stretch my legs all the way straight (I'm 6'6")! All together, the upgrade in size and quality was definitely worth the expense.
Deep deep sleep now. No aches,pain,scary popping joint noises in the morning. Both of us standing straighter and getting right down to the business of life that each day brings. Absolutely recommend to anyone and everyone.