1. The air inlet is provided with a breathable regulating valve, including a seat and a screw cover. The seat is installed on the main body of the eye mask and the air inlet is covered.
2. The rotary cover is provided with at least one air hole, and the valve seat is provided with barrier structure that can match with the air hole. The air passage and barrier structure are enclosed into a ring area.
Please feel free to contact us for a full quotation. MOQ = 1000 PCS.
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