The black collection mattress gifted by Beautyrest is absolutely amazing. It feels luxurious and comfortable. I have the firm mattress and it gives my back and neck the right support without feeling like I am sinking in. The material is very durable and soft. I am a stomach sleeper and this mattress gives me the perfect level of comfort and stability. It has gel memory foam and it contours the shape of your body. It also helps with temperature control and I don’t feel too hot sleeping on it. Loved it so much!