My husband and I were incredibly excited to get our Casper Wave Hybrid Mattress and we have not been disappointed our first month in! This is our first mattress of this type and we were specifically seeking a mattress that would be supportive and cool and we both agree -- the mattress is exceeding our expectations! I will say that the claim that you don't feel the other person move is slightly exaggerated but the movement is highly diminished from our old, traditional Sealy Posturpedic. I would describe the mattress as having medium firm support which is exactly what I like - I swing between being a side and back sleeper and this mattress allows me to sleep on my side and not wake up with hip or lower back pain - yay!