For you, comfort, support, quality and price are all top of mind. Rest easy. This Euro top king mattress from Sierra Sleep by Ashley blends high performance with low-maintenance features for a masterfully crafted mattress made to stand the test of time and offer great, overall support. At the core of this mattress: a 638 15-gauge pocketed coil system that’s topped by layer upon layer of feel-good comfort, including high-density foam, firm support foam, firm quilt foam and gel memory lumbar support foam for a cooler night’s sleep. And for added protection: a luxury nano stain-resistant/waterproof cover and bed bug/dust mite/allergen barrier for peace of mind.