Amazon.co.jp: 1Re Dust Guard for AirPods A-Focus Airpods Dust Cover, AirPods Skin Stickers, Compatible with 1st and 2nd Generation (Not Wireless), Metal Garbage Intrusion Prevention Cover, Ultra-Thin Metal, Set of 3, Red :
Ringke Dust Guard Adhesive Sticker for Apple AirPods Pro, Earphones Headphones - Matte Space Gray - Walmart.com
Amazon.co.jp: CM Tech AirPods Dust Guard, Set of 2, Skin Seal, Metal Dirt Prevention, Air Pods Guard Cover, Ultra Thin, 0.002 inch (0.04 mm), 2nd Generation AirPods Wireless Charging Case (Gold) : Electronics