I thought I lost my sleep mask so I bought this one, but I found the old sleep mask the same day the new one arrives. It is indeed very good as you can see from the Amazon reviews. I mainly need a sleep mask so it is a overkill for me.

https://www.amazon.com/gp/product/B01LDJPEM0/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

Pick up on campus.