[This review was collected as part of a promotion.] I have been sleeping on the original hybrid mattress now for a few days and it is very comfortable for sleeping and for reading in bed.
I just discovered that my Casper Hybrid contains fiberglass as a fire retardant. I will be removing this mattress likely tomorrow and purchase a replacement that does not contain such a harmful substance.
[This review was collected as part of a promotion.] It's a great mattress. Soft and comfy but also sturdy enough with good support. I'm mostly a side/stomach sleeper and sometimes back. I'm sleeping great.