Each set includes 2 face covers, including 1 pre-filtered, and 2 additional filters. Face cover made from polyurethane material safer than ordinary sponge or cotton, the filter effect is better while being more breathable. Equipped with 2 aeration valves. Ideal for sports such as running, cycling, training, walking, etc.
Dimensions: 33.5 x 15.5 x 10 cm
Can be worn for over 2 years
It is recommended to replace the filter every 30 days
One size fits all for men and women