Skalnik is a travel shop run by people with a passion for the mountains. We've been in the industry since 1993, and today we're proud to be one of the largest travel shops in Poland, operating for such a long time. This time has given us a deep understanding of what we do and what we're passionate about. NATUREHIKE Tuye R 6.5 CNK2450WS038 Square Mattress Summary: A winter travel mattress designed for overnight stays in severe frost. Item Description: The Tuye R 6.5 CNK2450WS038 Square mattress can withstand even the harshest frosts and provide a comfortable sleep when temperatures drop below -25°C. Thick and comfortable, it packs down to about the size of a water bottle, so it easily fits in a backpack. The R-Value for the Naturehike mattress is a staggering 6.5. This indicates excellent insulation and optimal temperature maintenance, even in severe frost. The mattress can be used on winter expeditions, when temperatures drop significantly at night. This is achieved firstly, thanks to its above-average thickness of 10 cm for a trekking mattress, and secondly, thanks to the sophisticated design of the chambers between which air circulates. The mattress also features aluminum foil panels that reflect heat and prevent heat loss. The mattress is thick and comfortable, with side walls that prevent it from collapsing under pressure. It is made of a lightweight, pleasant-to-the-touch nylon material with a TPU coating. The coating reduces the risk of abrasion and makes it moisture-resistant. It also allows for quick and easy cleaning of the mattress after it gets dirty. The double valve prevents accidental air leakage during inflation and backflow when deflated. An inflation bag is included for easy inflation. Features: R Value 6.5 winter travel mattress; good insulation even at temperatures of -25°C and below; comfortable, wide rectangular shape, reducing the risk of slipping off at night; weighs only 460 g and when packed is the size of a bottle of water ; easily fits in a backpack ; up to 10 cm thick - comfort and great insulation ; refined construction of chambers between which air circulates ; a layer of aluminum foil that reflects heat ; reduces heat loss ; made of lightweight, very strong nylon material ; TPU coating protects against moisture and facilitates cleaning ; double valve - simple and quick filling and deflation ; included pumping bag ; Product Features Color: Silver ; Material: Nylon 20D TPU ; Weight: ; Dimensions: When packed: 10 x 20 cm ;.