Comfortable triple (3) layer cotton fabric face masks offer between 75% and 85% of the protection that is offered by surgical masks. These masks are washable and reusable. Universal Size Mask: 220mm by 130mm Set of four (4) masks: Salamander, Blue, Navy, Black. Note that masks - even surgical masks - offer limited protection against contagion and must be used in conjunction with other preventative measures such as regular and thorough washing of hands. Try not to touch your face mask unnecessarily. Recommendation: Wash you cotton face mask regularly - shorter periods between washing reduce the risk of contamination. Wash at 30 to 40 degrees Celsius. Hand Made in South Africa.