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 beautiful 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