The Jamison Sapphire Lake is a plush twin mattress built around layered comfort and a coil support system that punches above its slim 8.5-inch profile. The quilted cover uses a stretch knit fabric with gel cooling foam worked right into the top layer, so the surface stays cooler and conforms gently as you settle in. Beneath that, Cloud Comfort Foam and Comfort Deluxe Foam stack together to give the plush feel real body — cushioned without that sinking, unsupported sensation. The foundation is a DuraSpring Coil 390 LYTE system with Advant-Edge perimeter support and a layer of Balance Support Foam underneath, keeping the sleep surface stable and evenly responsive across the whole bed. It pairs with Jamison's HD Natural Wood Foundation or an adjustable base, both sold separately.
