Material: 1st ply- Microfiber textile 2nd ply - Pre-filtration 3rd ply - E7 0.4µm nano filter (EN779) 4th ply -natural soft cotton (130 g/m2) Weight: 12 g One size: ~ 21 x 13,5 cm. Fits for all. Usage: multifunctional. Protects from wind, fog, pollen, ash, dust and other microscopic particles. Description: - Safe, comfortable, allows free breathing, windproof, soft and skin-friendly. Multiuse (washable) - Protects from unnecessary face-touching - Light material: can be worn throughout the day - Adjustable. Elastic loops add extra comfort. - Does not mute voice - Suitable for indoor and outdoor use - use in office, for sports, handicraft, gardening, travel etc. - Foldable Made in Estonia