1. Die lengte van die maskeroorlusmoet geskik wees, te kort sal die ore wurg, en gereedskaplange sal swak pas;
2. The material of the mask earloop must be elastic: the mask oorlus is made of spandex + nylon: because this material has high comfort, good elasticity, and does not hurt the skin;
3. Mask oorlus should be round and flat: usually mask ears have round and flat ears. According to the different masks, choose the appropriate ear straps, such as Purking oorlus. The regular specifications are complete and can be customized.