FixmattiWomen's Sweatpants High Waisted Active Jogger Pants Lounge Bottoms

I’m 5’2 and 170. What size should I get? Thanks

Is there a tie to secure the robe?

Can I wash this? I read some reviews and they say it falls apart or it don’t fit anymore?

What is the difference between 1 Black and 2 Black other than there are two different models?