The Sealy Kingsley Flex Medium has a familiar Sealy bounce to it and a little unsteadiness on the top layer. Spinal support is OK but overall a hard sell for the price.
Sealy Kingsley Ultra Plush
The Sealy Kingsley Ultra Plush has a spongy top layer that has good pressure relief but not the nicest plush feel mattress we have tested. The top layer feels a little unsteady.