Features
![](http://morrisonoutdoors.com/cdn/shop/files/MO_ProductPageIcons_Thermometer_{width}x.png?v=1689653907)
Warm & Cozy
Come rain or shine, the Big Mo 40 has you totally covered. Our sleeping bags are soft like a cloud, fun to hang in, and never slip off during dream time. Slide your feet in the footbox, snug up those toes, and zip up for ultimate warmth!
![](http://morrisonoutdoors.com/cdn/shop/files/MO_ProductPageIcons_Insulation_{width}x.png?v=1689653907)
Premium Insulation
The Big Mo 40 uses a lofty, cozy synthetic insulation, which performs better than down when wet.
Weighing just over 1 lb (19 oz/539g) the Big Mo 40 is ready to travel.
![](http://morrisonoutdoors.com/cdn/shop/files/Artboard_235_3x-8_{width}x.png?v=1708971534)
Easy Cleaning
After your big adventure, the last thing you want to worry about is a fussy clean-up. Our bags are made from a weather-resistant nylon so you can easily wet and wipe when you’re on-the-go. Once you’re home, toss your sleep sack into your washing machine for quick and easy cleaning.
![](http://morrisonoutdoors.com/cdn/shop/files/Social_Giving_-_Outgrown_{width}x.png?v=1712937561)
This Purchase Gives Back
This quarter, we are proud to donate 1% of all sales to Outgrown, helping young families spend more time outdoors.