I own this “Cape” and it is basically like wearing a blanket around, but MUCH more stylish than a snuggie. It is on sale here and they always have free shipping/free returns (I ordered a Small which is definitely oversized, but seems right for me). I have worn it to work with dark or black skinny jeans and a short or long sleeved black shirt. And the length allows me to feel ok going shopping in it after I’ve changed into black leggings after work… win win.
I’ve ordered several things from ASOS and have liked them all. They are basically like the Forever 21 of the UK… a few gems mixed in with a sea of “what is THAT” and “woah, that’s a dress, not a shirt”. But with free shipping and free returns, I’ve been pretty pleased with them.