The Kirkland Signature by Stearns & Foster Lakeridge is a 14.5-inch thick high-profile hybrid mattress featuring a California King size (72 x 83 x 14.5 inches). This medium-firmness mattress (5 out of 10 on the firmness scale) combines comfort and support through a sophisticated layered design of poly foam, memory foam, and a pocketed coil support system.

The mattress features TENCEL fabric designed to wick away moisture, Indulge Memory Foam engineered by Tempurpedic for Stearns & Foster, IntelliCoil pocketed coils for individualized support, and a Precision Edge + AirVent System providing comfortable edge-to-edge support. The 6.25-inch comfort layer includes a 2.5-inch quilted cover, 1-inch poly foam, 0.75-inch memory foam layer, and 2-inch transitional poly foam. The 8.25-inch support layer consists of 7.25-inch individually pocketed coils with reinforced edge support and 1-inch base support foam.

Performance testing shows this mattress excels in motion transfer reduction (8.6/10), edge support (8.9/10), and pressure relief (8.0/10), making it ideal for side sleepers and couples who want minimal motion disturbance. The mattress has very deep sinkage (2.73 inches) creating an enveloping feel. Trade-offs include fair cooling performance (7.0/10), low bounce (6.99 inches total), slower material response time (1.9 seconds full recovery), and moderate off-gassing (8 days). The mattress is fiberglass-free, ships compressed in a box, weighs 127 pounds, and includes convenient handles for positioning.

Sold exclusively at Costco, the purchase includes delivery to room of choice, professional setup, haul away of old mattress and foundation, and up to 4% Costco rewards. Backed by Costco's 365-night trial period and 10-year warranty. Optional foundation available for purchase.