Product Description Thank you for viewing. This is the Rab Ultrasphere 4.5 sleeping mat (regular size). I have not unfolded or used it since purchasing. 【Features & Benefits】 Ultra-light & Compact: Weighs only about 370g. It packs down very small, making it ideal for UL (ultra-light) camping and mountaineering. High Insulation: R-value of 4.3. Thanks to the "TILT" heat reflection technology, it provides warmth suitable for spring to autumn, as well as low-altitude winter mountain use. Comfort: 8cm thick. The two-layer construction provides a comfortable sleeping experience, minimizing the feeling of uneven ground. Included: Pump sack, stuff sack, and repair kit are included. 【Specs】 Size: Regular (183cm x 51cm) Thickness: 8cm Weight: Approx. 370g R-value: 4.3 (ASTM) Color: Dark Pewter (Gray) 【Condition】 New and unused. If you are looking for a lightweight mat, please consider this for your tent camping in the coming seasons! Ultra-light UL Yamatomichi