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In 1986 Therm-a-Rest created the first modern closed-cell mattresses. In the years since, closed-cell mattresses have become a mainstay of climbers, backpackers and adventurers around the world. This video explains the technology and design innovations in Therm-a-Rest closed-cell mattresses and outlines the benefits of different models. Z Lite™ Sol Thermoformed peaks and valleys offer greater warmth and comfort than flat foam. Nesting design is compact and easier to carry than rolled mattresses. Interlockin
