Excellent for a child’s bed fits perfect in this  although it has springs it is very comfortable and they can’t be felt don’t know if a king size mattress would be as comfortable due to weight   Item came securely packed and  unraveled in seconds and took its shape within a hour or 2 i would recommend for a child’s bed son is 9 and very happy with it and says it’s comfortable just not sure if an adult would be as uncomfortable