Powerful Noise Reduction Design with sophisticated independent three-layer sound insulation, protect your ears in noisy areas without hurting. It can reduce up to 37dB of noise, allowing you to enjoy a quiet time. Heat Shape Mold Our custom-molded earplugs are suitable for all ear canal sizes. Just heating in boiling water, let them cool a bit, and shape them to your ears. No worry to fall off even as you sleep. Soft & Comfortable Ergonomic design structure makes you hardly feel anything in your ear while wearing these. Two kinds of replacement earbud tips are made of super-soft silicone and soft memory foam material. Widely Used Noise Cancelling Ear Plugs will eliminate disturbing sounds, perfect for sleeping, snoring, office, concerts, construction, fitness classes, nightclubs, sporting events, travel, and more. Portable & Reusable Simple and lightweight design, you can take them with you anytime. The earplug precision technology makes the long service life be guaranteed. They can be reused for many years.