Internal anti -fog coating process. Close -up of the , comfortable and fit, not easy to leak. Adjustable bands can adapt to multiple size circumference. Quickly adjust the zone, humanized adjustment buckle, which can easily adjust the length and comfort of the . Especially thickened band, the zone has good stretching. include: 1*Swimming Comes with a nose clip, earplugs, swim cap, and protective case, providing all-around protection and enhanced usability for both kids and unisex adults.