REALLY WARM plus-size sleeping bag?

[Saracen]

I am always so cold when I camp! Nearly half the car boot is required for a huge pile of bedding to try to keep me warm at night: sheepskins under me and on top of me, several sleeping bags, hot water bottle, lots of layers... the only times I have ever been warm enough are during actual heat waves.

My kid is crazy about camping and talks about it all year long, so I really have to find a way to make it work. Though I love a bargain, I'm ready to throw money at this problem if required. I reckon an excellent sleeping bag would be a good investment as it would transform my holidays. I'd camp more often if it weren't such an ordeal for me.

I was looking on eBay and noticed some secondhand military sleeping bags, which presumably would be big enough for me. (I am a ladies' size 26 and don't fit in mummy bags or even in some normal sleeping bags.) Some seem to be intended for extreme conditions. Would that be a good idea?

I don't need anything particularly compact, because we travel by car.

Any thoughts will be gratefully received!

I guess they doze in their recliner chairs at the edge of the water all night, rod in hand, just waiting for a bite. It must get very cold and boring but it is worth it to them: www.caperlan.co.uk/advice/carp-night-fishing-guide-a_43017.

Who am I to judge, given that I love nothing better than a four-hour game of chess? ;-)

Update: now I love it even more. Over the last week, in the heatwave I slept on the trampoline in the back garden. I removed the lining from the sleeping bag as I knew I wouldn't need it. The lining is about half the weight of the entire sleeping bag, but the bag is still quite substantial without it.

One night there was a thunderstorm. I stayed out on the grounds that it was better to be cool and wet out there than hot and dry indoors. It rained very hard several times, though only for less than 20 minutes each time.

Whenever it rained I zipped myself right up and pulled the big flap up over my face, ensuring that the edges of the flap fully covered the opening at the top of the bag. I could feel the hard pummelling of the rain on me like a massage. To my amazement, I didn't get at all wet! In the morning when I hung the bag over the washing line to dry, it was clear there was a fair bit of water which had begun to soak into it from above, so it wouldn't have been proof against a prolonged heavy rain. It was still quite good though. It's definitely fine against a heavy dew or light rain.

My poor teen in her normal mummy sleeping bag was absolutely 100% wringing wet. She tried to stick it out, but had to go in the house just before dawn.

In future when I am doing my usual camping in a tent, this water-resistant bag can be my second line of defense against a leaky tent. Mind you, due to the weight of it, even without its lining, I guess I might have struggled to get it completely dry afterward if it had got soaked and we hadn't had such warm dry weather to dry it thoroughly next day.