About size: ▶1. From eyebrow to chin,if less than 14cm,pls select size S/M,more than 14cm，pls select size L/XL. Face width:Less than 12cm,pls select size S/M,more than 12cm,pls select size L/XL. ▶The mask is equipped with a mount but it is not shown in the PIC.
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