cycling masks

Features:
- Simple design, lightweight and portable. Suitable for most people.
- With adjustable HOOkLOOP, this mask is not easy to fall off.
- Fit comfortably under helmet. Avoid inhalation of automobile exhaust when you're riding.
- Good Protection against gases, smells, PM 2.5, second smoke, pollen and particulates.
- Suitable for outdoor activities such as running, jogging, biking, cycling, riding, hiking, skiing, snowboarding.
Note:
- The cover of mask is washable. Please take off the filter when washing( the activated carbon filters can't be washed).
- Under normal circumstances, the filter is recommended to be replaced every 30 days. If the the mask used frequently, please replace the filter when it became black or be damaged.