The Spring Air Back Supporter Hybrid Kaylee Medium Mattress is a medium pocketed-coil hybrid mattress built for combination sleepers and most body types. 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.
Each coil moves on its own, so a partner getting up doesn't roll you out of position.
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 5/10 firmness — soft enough to relieve pressure on shoulders and hips, firm enough to keep your spine in line. Most-recommended firmness for combination sleepers.
Built for adaptive support and breathability. Every layer is hand-checked before it ships from our warehouse.
The Kaylee Medium is the tallest and most versatile model in the premium Back Supporter collection. At 15.5 inches with 8-Series pocketed coils, it provides the most refined medium comfort Spring Air offers. The additional height over the Extra Firm (14") accommodates thicker comfort foam layers for enhanced cushioning while the premium 8-Series coil system maintains Back Supporter zoned lumbar support.
The 15.5-inch profile gives the medium gel foam comfort layer more room to work, creating a deeper medium feel (approximately 5/10) than the Francesca Medium. The 8-Series pocketed coils provide more precise body contouring because the taller coils have greater range of compression. The Back Supporter zoned lumbar support keeps the lower back aligned while the medium surface accommodates side sleeping at shoulders and hips. Gel cooling runs through the comfort foam. Made in the USA. CertiPUR-US certified.
Combination sleepers who want the best — premium medium with the tallest Back Supporter profile. Back sleepers with lumbar concerns — 8-Series zoning is the most precise Back Supporter available. Couples — premium motion isolation + versatile medium. Sleepers upgrading from the Francesca Medium — the 8-Series is a meaningful step up.
Twin, Twin XL, Full, Queen ($1,499), King, CA King. Free delivery. Visit a showroom or call (800) 218-3578.
