The Spring Air Back Supporter Hybrid Kaylee Plush Mattress is a plush pocketed-coil hybrid mattress built for side sleepers and combination sleepers. Spring Air builds the original Four Seasons Free Arm pocketed-coil unit in the US, paired with high-density support foam and a quilted comfort top. At 15.5", it sits in the premium profile range — generous enough for adjustable bases yet still easy to sheet.
Individually wrapped coils flex independently for support that responds to your body, not the other way around.
A breathable quilt and gel-infused top draws heat away so you don't wake up hot.
A tall comfort and support stack means more contour up top and stronger lumbar push-back below.
We deliver, set up in your bedroom, and haul away your old mattress — no extra charge.
A 3/10 firmness — soft enough to cradle hips and shoulders. Best for side sleepers under 200 lb.
Built for adaptive support and breathability. Every layer is hand-checked before it ships from our warehouse.
The Kaylee Plush is the softest model in Spring Air’s premium Back Supporter collection. At 15.5 inches with 8-Series pocketed coils and plush comfort foam, it delivers the deepest cushioning available with premium zoned lumbar support. The tallest Back Supporter profile with the softest surface — for side sleepers who want the best Spring Air hybrid experience at $1,499 Queen.
The plush gel foam comfort layer provides deep pressure relief at shoulders and hips (approximately 3-4/10 firmness) while the premium 8-Series pocketed coils maintain Back Supporter zoned lumbar support underneath. The taller 9-inch coil system prevents the excessive sinking that occurs on cheaper plush mattresses by providing more support travel before bottoming out. Gel cooling draws heat away from the plush surface. The 15.5-inch profile is one of the tallest in the Spring Air lineup. Made in the USA. CertiPUR-US certified.
Side sleepers who want premium support — plush surface + Back Supporter lumbar zoning. Hot sleepers who want plush — gel cooling + tall coil airflow counteracts plush heat retention. Couples — plush for comfort, 8-Series for motion isolation. Sleepers who want the softest Back Supporter — the Kaylee Plush is the softest premium hybrid Spring Air makes.
Twin, Twin XL, Full, Queen ($1,499), King, CA King. Free delivery. Visit a showroom or call (800) 218-3578.
