Still a favorite of the ultralight elite, the Z Lite mattresses are our lightest, most compact closed-cell mattresses. The Z Lite SOL features a compact accordion-style shape and heat-trapping dimples. The Z Lite SOL has reflective ThermaCapture coating that helps capture radiant heat, increasing overall warmth by nearly 20%. The proprietary foam is softer on top for extra comfort and denser on the bottom for extra durability. Wherever you’re headed, a Z Lite Sol mattress is the right choice for ultralight warmth, durability and comfort.