In 2014, Robertson won the Boston Film Festival Award for Best Supporting Actress for White Rabbit. In 2015, she starred with Scott Eastwood in Nicholas Sparks' film, The Longest Ride, and also played the starring role in Brad Bird's film Tomorrowland, with George Clooney and Hugh Laurie.
The Elevation Training Mask is a breathing device that is similar to military gas masks (version 1 of Training Mask). Version 2 or 2.0 is simpler since it does not restrict eye vision (see the image on the right).
However, it's not just oxygen, they are getting dangerous levels of carbon dioxide.. This causes a lot of strain on your lungs and heart. Among other things, wearing this mask also drastically decreases your training intensity. It is equivalent to strapping duct tape over your mouth and going for a run.