Feels and fits like your favorite BUFF product. Designed with a 3-layer BUFF replaceable filter and changes out easily. Ergonomically designed with 95% recycled REPREVE performance fabric and a 4-Way ULTRA STRETCH fit easily covers your nose and mouth without feeling claustrophobic or clammy. Simply pull it up and down as needed, no rearranging required. Great to use when going to the store, on the trails, in the garden, and at the park to protect from allergens, dust and other pests.