This breathable, cotton fabric face masks is washable and reusable, making it a fun and eco-friendly alternative to disposable masks. Ideal for cycling, hiking, jogging and climing. Protect mouth and face from dust, cold, ash, pollen, allergies, flu, passive smoking, etc. Made with two layers of cotton fabric, pleated for a comfortable, adjustable fit. Use the one open end to add your favorite insert for extra filtration or cover top of surgical mask for an extra layer of protection. Elastic ear loops will be loosely tied, allowing you to adjust the sizing to your comfort.