Stay safe! Stay healthy! The Slonny mask has 3 layers: comfortable cotton for inner and outer layers and ISO 16890 certified special filtering fabric for the middle layer. The mask has nice Slonny SY logo made of Swarovski® crystals. Sizes refer to head measurements- circumference.
✔ Durable quality cotton of higher thickness
✔ 100% cotton + ISO 16890 certified special filtering fabric
✔ Washing instructions: gentle hand wash only