Will a plush mattress be bad for my back?

Not when it is built on a strong core. A common worry is that soft means saggy, but the plush gel comfort layers sit on a 10-inch high-density soy support core that keeps your spine in line. Side and lighter sleepers in particular get better alignment from a plush surface, since it lets the shoulder and hip drop in. Strict back or stomach sleepers who want firm support may prefer the firmer Cozy ICE 8-inch.

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