Replaceable Activated Carbon Filters for Optimal Filtration Review

★【Five layers Filter Material】- 2 layers of non-woven fabric, 2 layers of melt-blown cloth,1 layer activated carbon cloth. ★【Filter Size】- carbon filters size measures approx 12 x 8 cm/4.72 x 3.15 inches, Both adults and kids can use it, easy to insert or replace the original one,Suitable for men, women, and children. ★【Activated Carbon Filters】- high quality. this filter is ideal for all outdoor and indoor sports, such as running, jogging, walking, cycling, motorcycling, riding, hiking, skateboarding, skiing, snowboarding, paintball, lawn mowing, public transport, and other activities. ★【Safety protection】- effectively protect your mouth and face from Dust, Haze, Allergies, Pollution, Ash, Pollen, Gardening, Crafts, PM 2.5, Vehicle Exhaust, Woodwork, Pollen Allergies, and Fumes. ★【We Suggest】- filters are cannot be cleaned and not reusable, suggest change the filter every 2 days or 3 days.