AEGISMAX Urltra-Light Goose Sown Sleeping Bag Spring Autumn Urltra-compactable Sleeping Bag Mummy Sleeping Bag Item:M2 series.Regular(L185cmXW80cm)and Large(L200cmXW86cm) can zip together. COMFORTABLE:800 filling power and great soft skin fabric,keep you warm and comfortable all night. ULTRALIGHT:Light weight,good for backpacking. COMPACT:Compressed size is very small,can be easily fitted into any backpacking,easy to carry. Comfort:+7 C/45 F/Lower Limit:+2 C/36 F/Extreme:-12 C/10 F.Please know in advance:Manual measurement error 2~5cm.