Uniqlo AIRism Mask UNIQLO AIRism WASHABLE FACE MASK M Size White Specifications Size 23cm x 14.5cm - Patented unique 3-layer structure. - Built-in non-woven fabric filter cuts 99% of bacteria and pollen particles. BFE99% (※Initial value) - Improved breathability by changing the material of the outer and inner layers. - Updated for a more comfortable fit by fine-tuning the fit. - Added size indication on the skin side for easy size identification. - 90% UV protection with 3 layers. - Cool sensation, feels cool to the touch. - Washable specification, can be washed in a washing machine (using a net). ※It has been found that the BFE cut rate, which indicates the filter function, is reduced to 95% and the pollen collection rate is reduced to 93% by repeated washing. (After 20 washes) ※The side with the AIRism logo printed on it is the skin side. 3-layer structure for high performance. 1st layer: AIRism for a smooth feel. 2nd layer: Cuts 99% of bacteria and pollen particles. BFE99% 3rd layer: Mesh material for excellent breathability ※Some of the packaging will be folded for shipping.