Helped heal bruised tailbone

Have owned this mattress for almost two years and it’s my favorite place to be. Slid down some stairs and severely bruised my tailbone leaving me to lay sideways on our old (12 years +) innerspring mattress we improved with memory foam mattress toppers that had indented nicely over the years. A year after the slip down the stairs was still having issues with pain in tailbone area. Friend bought a Purple mattress with the adjustable base. As we had been eyeing the Purple mattress for a while asked if I could try it out. It is different in that you float on top which takes some getting use to after sinking in for so long. She set the adjustable base to the anti-gravity setting which lifts just the legs. It was the first time I had laid on my back and not had pain in my tailbone. It was hard to get up and leave to go home to my own mattress. We bought our mattress, the original with the foam base and purple grid on top in August 2018. We did not purchase the adjustable base but I realized if I tucked a pillow under my knees while laying on my back it gave basically the same results. I honestly contribute the lack of pressure and I’m sure time as being why I finally healed. Keeping cool - I was never one who got hot during sleep neither is my husband. This mattress does not trap heat. I found that I would get too cold during cooler nights as it circulates so weok. We received the stretchy Purple sheets with out mattress purchase and yes you need them or something similar or you do not benefit from the ingenuity of the mattress. I personally have claustrophobic tendencies in not liking to feel trapped, using their matching top sheet did not work for me so I went back to our cotton sateen flat sheets Instead which then gave us another sheet(with the help of sheet clips) to use as a bottom sheet. The mattress is very heavy and holds the purple stretchy flat sheet under its edges as we use it for the bottom sheet. Husband is 6’4” about 200 lbs and is front sleeper to start off the night but rolls during the night