Natural fiber sleep suits for toddler - does anyone know of any?

Hello
DS has decided he is a 'big boy' and wants blankets now rather than his sleeping bag. This is fine except as we come into winter, his room gets cold, and he throws off his sheet and blanket, resulting in getting very cold during the night. I tried a sleep suit that my SIL gave me (was her DD - my poor DS looked very 'pretty in pink' good think DH was not home that night to see this little experiment), but it was cotton on the inside but polar fleece on the outside, and DS got too hot and sweaty. As he also gets bad eczema we try to keep him in natural fibers only.

So, does anyone know of any sleep suits that are made just of natural fibers - thinking wool, or cotton or even bamboo???

Thanks
FG

ooo, you wrote this thread before I could! I have a very sweaty DD that needs a sleep suit too. We can't put acrylic on her or there is almost a puddle in her bed!

I was looking for something in a flannelette