Perfect for when you need reliable insulation in a lightweight package. The stratosphere 4 boasts a superior warmth to weight ratio, making it a versatile all mountain sleep mat which has a small enough pack size to take on all your trekking, climbing and backpacking adventures. Lightweight and compact, it features stratus r insulation that is designed to trap air and reduce heat loss through convection, helping to maintain your temperature when the mercury drops and ensuring you're charged and ready for tomorrow's challenges. The stratosphere is quick and easy to inflate when you're ready to hunker down for the night. The mat features a low profile two way valve and comes with a handy pump sack. Its oversized outer chambers keep you in the centre of the mat and stop you rolling off in your sleep, while the spacious rectangular shape will ensure a comfortable night's rest whatever your preferred sleeping position.crafted from insulation and outer fabric finished with a fluorocarbon free dwr. The stratosphere 4 is a robust and reliable sleep mat which you can depend on to keep you comfortable, warm, and well rested. Activities campingfast light adventuresmountaineeringtrekkingstratus r insulation traps air and reduces heat loss from convective currentsr value 3.8thickness 8cmlightweight construction and insulation for superb warmth to weight ratio and minimal pack sizeoversized outer chambers help keep you centralised on the mathybrid rectangular shape allows various comfortable sleeping positionslow profile two way valve for easy inflation and deflationpump sack included for rapid and hygienic inflationroll away stuff sack with repair kit includeddimensions regular 183x51cmpacked size regular 24x12cmweight regular wide 840g 29.6ozinsulation stratus r 100% polyester 160 gsm insulationfabric 75d polyester outer fabric with internal tpu coating and fluorocarbon free dwrdimensions h183cm x w64cm x d8cmpacked size 30cm x 14cm 11.8in x 5.5in