Hand Made. Made in USA. 100% Cotton. Seamless nose wire. 3 Layers with Pocket For Filter Insert. Elastic Ear Loops. Washable. Reusable. Size: Please Check the Size Chart The inner fabric of the mask & color of the ear bands may vary. PM 2.5 Filter Made of activated carbon & non-woven melt-blown filter cloth, 5 layers filter system effectively keep away from PM2.5 & a range of airborne contaminants Do Not Wash! Five-layer Filtration: Non-woven fabric + melt blown fabric + activated carbon fabrics+melt blown fabric+Non-woven fabric Size: Kids 4" x 2 3/4" , Youth & Adult 4 3/4" x 3 1/8" Kid 10 x 7cm. Adult 12 x 8 cm. Ideal to protect your mouth & face from Dust, Haze, Allergies, Pollution, Ash, Pollen, Gardening, Crafts, PM2.5, Vehicle Exhaust, Woodwork, Pollen Allergies, & Fumes It is recommended to replace the filter after a maximum of one week to achieve the best results. Buying multiple pieces is more cost-effective & suitable for sharing with family, friends, & neighbors. Breathable & Flexible. For sanitary reasons, we do not accept returns & exchanges Black Rainbow Cat/Cats Face Mask Filter Pocket Adjustable Soft Elastic Pads Separately Seamless Nose Wire