Women's Terra Water Repellent Trousers/Pants with

I currently wear trespass trousers for work (sized up cause I have big legs and bum) they fit well if a bit roomy but that is fine so did the same again, this pair wouldn't go over my legs never mind bum so back they go. Don't even know what size I'd need to go to for them to actually fit 🙃

Just as described