Rab Stratosphere 5.5 inflatable trekking mattress

The Stratosphere 5.5 by Rab is an inflatable mattress ideal for mountaineering, expeditions, and technical trekking where superior insulation combined with a lightweight design is required. Thanks to the Stratus™ R technology made from recycled polyester, this mattress efficiently traps air, drastically reducing heat loss through convection, ensuring an exceptional R-Value of 5.5 perfect for facing the coldest temperatures. The generous thickness of 8 cm and the enlarged outer air chambers provide unparalleled comfort, keeping the body stable in the center of the mattress and preventing slipping off during sleep. Its hybrid rectangular shape accommodates various resting positions, while the low-profile two-way valve, paired with the included practical pump sack, allows for quick, hygienic, and effortless inflation even after long days of hiking. Made entirely from recycled materials and finished with a fluorocarbon-free DWR treatment, the Stratosphere 5.5 boasts an incredible warmth-to-weight ratio, taking up very little space in the backpack (only 24x13 cm in the Regular version weighing 785g). Complete with a repair kit and transport sack, this mattress represents the ultimate choice for those seeking reliability and restorative rest in the most challenging weather conditions.