1. Silicone material, durable, non-toxic, no peculiar smell, no irritation to the human body, no allergic reaction 2. Wearing soft and comfortable, with stronger sound insulation effect 3. S/M/L size can meet your various size requirements 4. Suitable for Huawei FreeBuds 4i / FreeLace Pro / Active Noise Canceling Earphones 3 5. Bluetooth headset is not included
