Coleman - Biscayne™ 40°F Big and Tall Sleeping Bag

See if you can borrow a mommy bag because if you’d like to sleep displayed out with your legs and arms akimbo, you may hate a mummy bag. Or you may find you preferred to sleep with it half unzipped. I personally use a extra large rectangle shaped Coleman sleeping bag with a kind of synthetic cloth liner – not slick nylon or poly pro. In effect, it’s a giant blanket when left unzipped. I’m a big boy and I very much like to have my legs spread out, or bent up in the fetal position with the pillow between my knees. None of that works in a snug mommy bag. So again, borrow or rent one or two with the profile you were thinking about getting and decide if it’s right for you. And if not, go with the more traditional shaped rectangle bag.

I agree this is the way. Two bags. Originally bought a bag rated for -10c but woke up shivering in the middle of the night of -6c. Now I use a Coleman rectangular bag over my -6c down bag. Makes a world of difference. Plus that with the double bag system you can use just the one in more warmer temps.

Most rectangular Coleman sleeping bags can be zipped together and won't break the bank.