Neoprene face mask - protection for the face against cold. Useful for skiing, snowboarding, or running. The mask covers the neck and face up to the level of the cheeks, has an opening in the nostril area, and a ventilation opening on the side of the mouth (preventing cold air from entering the throat directly). Neoprene, also known as synthetic rubber, is an excellent thermal insulator, successfully used in winter and water sports. Size: universal weight: 34g