Type: Air Mat Thickness: 5-8cm A lightweight, high R-value air mat from Naturehike. It has only been inflated indoors and has never been used. A waterproof stuff sack that doubles as a pump sack was used, so it was not inflated by mouth. Please refer to Amazon, Rakuten, etc. for details. Mummy type, green. R3.5-M size (183x58x7cm) Material: 20D nylon TPU. Temperature rating: -6°C and above. Length: approx. 183cm x Width: approx. 58cm x Thickness: approx. 7cm Storage size: approx. 10x10x18cm. Weight: approx. 440g.