?Any questions?We are confident in the quality and performance of our products. If you are not satisfied with the earplugs, you can contact us to provide exchange, return and refund services, warranty services and 7/24 hours customer service. We help you to buy truly worry-free, and you don’t need to bear any purchase risks. ?Upgraded aluminum shell & Portable?The upgraded aluminum shell has a 40% larger capacity than the regular one, so that it can fully accommodate two pairs of earplugs, so that each pair of earplugs has a home and will not be lost. While upgrading, it remains convenient, equipped with a carabiner, which can be carried anywhere, and has a waterproof effect. Let us use it conveniently to resist the anxiety noise brought by the outside world, listen more to the voice of the heart, the heart is home!. ?Various Occasions & Various Ears?Suitable for concerts, music festivals, music spaces, musicians, airplanes, motorcycles, noise laboratories, sports events, sleep and other places that are sensitive to noise or have wonderful music. The front end of the earplug is small, and the back end of the earplug fits the all ear canal well, suitable for all ear canals, without worrying about falling off or not fitting the ear. Let's use it in any space of life!. ?More Music & Less Noise?The filter of the high-fidelity noise reduction music earplugs evenly reduces external noise while maintaining the full spectrum. This means that noisier and more ineffective noise can be blocked, and higher-fidelity and clearer music can be heard. Let's use it to enjoy more music!. ?Advanced Noise Reduction & Hearing Protection? Advanced noise reduction technology up to 23dB, made of TPE ultra-soft material with excellent surface touch, non-slip and shock-absorbing features, as well as equipped with high-tech double-layer filter to reduce the noise and protect your ears from harmful noises. Let's use it to protect your ears in this era of information explosion!.