ProLite series mattresses are born to be test winners and people's favorites. This new model is suitable for three season use but still compact enough to carry around with ease. Its surface fabrics are durable ProLite quality: not hysterically thin, but still light enough for demanding users. The Apex is thicker than other Prolite pads thanks to its StrataCore structure: a regular foam plate is equipped with ridges, helping trap more air in. This model boasts 13 cm of extra width, making it perfect for restless sleepers, as well as those who sleep on their side in a bent-at-the-knees-and-hips position. - Regular wide model: 183 x 64 x 5 cm - StrataCoreConstruction: Yielding the best warmth-to-weight ratio of any self-inflating mattress, StrataCore uses a continuous layer of thermal foam nestled between alternating ridges of air and foam. - Lightweight Comfort: Our warmest ProLite ever allows three-season adventuring without weighing down a pack. - Rugged, Self-inflating Foam: Expa