Brooklyn Bedding Titan 11" Hybrid for Plus Size Sleepers, Full

Male, 5' 10", 275lbs, back sleeper, king size mattress I have been using a Brooklyn Bedding, Titan King mattress for about 6 months. No more back aches. Previously, I was waking up every morning with a sore lower back. The pain would go away after about 30 minutes of moving around. The old mattress was sagging at my hips. Sitting on the side of the new mattress while getting in and out of bed feels solid. So far, it does not feel like that spot on the mattress is going to sag prematurely which I contributed to the problem with my old mattress (I paid $2,400 and only got 3 years out of it.) I bought my new mattress with the optional cooling pad. It's covered in a smooth nylonish type material permanently sewn on to the surface of the mattress. It's very solid quality. The edges/piping are finished nicely. This was worth the extra expense. I am absolutely sleeping longer and deeper with this mattress.