Instructables
One of the problems with sleeping bags is that your head slides off your pillow.  This cosy polar fleece (polyester fleece) sleep sack or sleeping bag liner (or outer) solves that problem by having a pocket to put your pillow into! 

As well as the intended use as an insulating sleeping bag liner (or if it is the wrong shape put your sleeping bag inside it), this sleep sack could be used as an extra layer in your bed on cold nights, or on its own as a lightweight sleeping bag for camping on warmer summer nights.  If you don't have a pillow you could stuff the pillow pocket with clothing to cushion your head, which has the added advantage of keeping your clothes where you can find them in the morning!

Made in licensed character fleece (Spiderman, Sponge Bob....) this is ideal for sleepovers.  Another idea would be to keep one or more in the car for emergency use in cold weather.

Only one cut and 4 seams make this a fast (less than 1 hour!), fun, fleecy project!.
 
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Step 2: Prepare the fleece

Pull your fleece gently across the cut end and it will curl towards the wrong side.

Fold your piece of fleece lengthways with the right sides together, keeping your cut edges & selvages even.

Place the pillow on one end of the folded fleece, 1" down from the cut end and mark a line 1" below the pillow.  Cut along this line, through one layer only, from one side (selvage) to the centre fold - i.e. cut halfway across the fleece.

Pin across the two ends and down the selvages.

indywave11 months ago
I love that fabric
Oh hey, this was released on my B-day, nice! I'm gonna have to make one of these, my room is freezing in the winter.
Mr. E Meat2 years ago
I like it! I need one to keep myself from freezing when the Mrs. steals the covers!
lizzyastro (author)  Mr. E Meat2 years ago
Now that is an excellent reason to make one. It took me less time to make the sleep sack than to write up the ible and sort out all the photos & comments!
l8nite2 years ago
this is a really neat idea, thank you for sharing