Winter's coming!

I think you will find that Marks and Spencer do a variety of fabric weights
in their range of pull on trousers.
I have two different weights myself.
Both, over at least two year's of washing and wearing are still in perfect condition and have kept their shape I'm pleased to say.

Last year I bought some Thermolactyl pyjamas from Damart. The trousers are like track suit bottoms so will do for indoor daywear. They are very warm and comfortable and wash very well.

For extra warmth I bought one of their jumbo size fleece hoodies. They are huge. I could fit three of me in there but it’s incredibly warm and meant I kept my heating bill very low.

I live in a cold house and wear leggins underneath M & S pull on stretchy trousers.

I buy jogging bottoms and wear with a sloppy old jumper or sweat shirt if just messing about indoors.

Bonmarche. And they are one of the few retailers who cater for little people like me with different leg lengths.

I have very thin but warm thermal leggings that I wear under trousers.

Bonmarche for sure