Roamer-6 Breath Mask

Reference Images 

General Information 

Mask
  1. According to defyitall, the correct mask is the 1629-00 Audlt Aerosol Mask. (Source)
Strap
  1. The strap may be the strap from a pair of scuba goggles, or possibly a camera accessory such as a wrist or neck strap.
Tubing
  1. The tube is non-spiral corrugated medical tubing.
Tank