Designed for Apple Airpods 1 & Airpods 2 charging case,because of its light and thin, it needs to adjust the top to fit 100% at first use. Precision molded for great fit. Protects your AirPods against bumps and drops. Made of TPU, durable and not easily deformed. Feel comfortable, harmless and very safe. Dustproof, Scratchproof and Shockproof. Easy to install and remove, don’t need to take out of the case when you charging. Contains a free keychain. You can hang it on your backpack or keychain without worrying about losing it.