Here is where I got the robe, I suggest you also get a balaclava

Robe:

https://www.amazon.com/gp/product/B06WW3LQ2P/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1

Balaclava:

https://www.amazon.com/gp/product/B06XKCZYXK/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1