No one tests mattresses like we do. TUFT & NEEDLE - Original Full Adaptive Foam Mattress… The Sealy Hybrid Performance™ Collectino Kelburn II features Sealy’s exclusive Posturepedic Technology™ which provides durable all-over support 20% more coils in the middle area of the mattress… Sealy Hybrid Performance™ 13” Profile. Read … Get performance ratings and pricing on the Sealy Posturepedic Performance Kelburn II mattress. When you buy a Sealy Sealy Hybrid Performance Kelburn II 13" Medium Hybrid Mattress online from Wayfair, we make it as easy as possible for you to find out when your product will be delivered. Ashley Chime 12 Inch Plush Hybrid Mattress - CertiPUR-US Certified Foam, Full. As you may have guessed, the Copper II is a slightly firmer bed than the Kelburn II.Instead of a layer of Extra Soft Foam, the … Showing the layers of the Sealy Hybrid Performance Kelburn II. The Kelburn II Cushion Firm is a 13.5-inch thick no-flip mattress … This item Sealy Posturepedic Hybrid Performance Kelburn 13-Inch Medium Firm Cooling Mattress, Full, Made in USA, 10 Year Warranty. The Kelburn II Cushion Firm is an unquilted spring core medium mattress model that is part of the Hybrid product line manufactured by Sealy.