Mumsnetters, I give you... the dungarama!
For sleeping in. Made of cotton or bamboo jersey, maybe a bit of elastane for stretch. Comes in winter and summer weights. Tapered at the ankle so the legs don't ride up while you sleep. No fastenings, you get in and out of the top.
Now that I think about it, it looks a lot bit like a babygro, but I trust there is sufficient new IP here to make my fortune. If you put it into production without me, please pay me a royalty. 🙂
What have you invented?