Found this little item a few years ago when I needed a new sleeping bag

Sportsman Guide
Guide Gear® Minus 30 Degrees Canvas Hunter Rectangle Sleeping Bag, Duck BrownCompare at $149.00
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$80.99
Non-Member $89.99
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(4.9) on 78 reviews
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It will keep you very comfortable even in the summer, you dont get too hot. I've had mine now for 4 years. I use it year round. Only downside is it is a big bag, not meant for backpacking. In fact Ill bet there are at least 6 of these in camp now.
Has a draw cord for around your neck and a hood that can be pulled down for extreme cold weather.