I purchased a double sized mattress and matching box spring from MattressGiant for a residential shore home. The mattress has been used MAYBE 10 times over the course of 2 1/2 years. Lately, my mother-in-law complained that when sleeping on the mattress, you sink down in the middle of the bed. I had my husband lay down and it did the same thing. He likened it to being like a "turtle on its back"?. He had a hard time getting out of the bed". I submitted my claim and pictures to MattressGiant and they denied my claim based on the... read full review »