Features: Offers protection for up to 50 washes Can be worn for up to 4 hours at a time (must be washed after each use) Filtration efficiency for 3 micron particles >90% Breathability - Air permeability (for a 100 Pa vacuum pressure) > 96 L/m2/s Junior Mask dimensions: 170mmW x 155mmH Adult Mask dimensions: 200mmW x175mmH Made from 2 layers of Polycotton fabric (65% polyester, 35% cotton) with a Polypropylene core Contains latex Made in Thailand