High-altitude sleep mask
Posted: Wed Mar 21, 2018 11:59 pm
There is an Indiegogo campaign for a high-altitude sleep mask. Claims to relieve periodic breathing at high altitude and help with oxygenation. Seems like a good idea:
https://www.indiegogo.com/projects/alti ... dventure#/
https://www.indiegogo.com/projects/alti ... dventure#/