Oxygen Mask Elastic Band/elastic cord, Latex free, the size we want is 0.9cm wide and 51cm long, Elongation is at least 300%, plastic cover at both ends. Colour in blue.

The second and third digits are numbers that denote the percentage of particulates the respiratory dust mask can filter out. For example, a P95 respirator is an oil proof respirator that filters out 95% of particles, and N95 means not oil proof respirator masks that stops 99% particles that are at least 0.3 microns.