Fleece lining curtains- a non flammable alternative?

[legitsuperhero]

It's getting colder now and I am determined to line my pathetic bedroom curtains this year. Cheap fleece from Ikea is an obvious route but the molten plastic at the windows in the event of a fire is a worry...

I had thought I saw some fire retardant fleece material online from a UK based company a few months ago but I can't seem to find it again. Has anyone seen this or have any opinions on using it?

Alternatively any less flammable material that would do a decent job?

A flame retardant curtain lining?

www.johnlewis.com/john-lewis-stockton-fire-retardant-lining-ecru/p277146

Wool is less flammable - could you scour your charity shops for old woollen blankets and use them? They'd be heavier though.

Remembered I had an ancient lanaircell blanket in the loft actually and have hung that up over the curtains as a test tonight before I embark on the work Think my mum has more so this could be my solution. It is heavy though so hoping the spindly rail holds up. Thanks both