The opinion of Aventure Nordique
The Sim Ultra 3.8 from Exped is a self-inflating mattress designed for use in 3 or even 4 seasons. High-performance and lightweight, it is manufactured on the inside with horizontal and vertical channels incorporated into the foam to reduce the weight of the mattress.
This mattress has 2 flat inflation/deflation valves that do not protrude from the mattress.
The Sim Ultra 3.8 has an R-Value of 3.7 according to the new ASTM F3340-18 standard, making it suitable for use from spring to autumn and beyond. Minimum operating temperature: -10°C.
|Product name||Sim Ultra 3.8|
|Length||M : 183 cm - LW : 197 cm|
|Width||M : 50 cm - LW : 65 cm|
|Folded||M : 27 x 17 cm - LW : 33 x 16 cm|
|Weight||M : 665 g - LW : 840 g|
|Accessories||Repair Kit, Storage bag|
|Country of Manufacture||Taiwan|