Feature: 1. Noise Reduction: Soft and perfect fitting design will largely improve the insulation and reduce noise, making the ear plug very suitable for sleeping and resting. 2. HEARING PROTECTION: Sound blocking earplugs can also provide protection for the ears of the hearing impaired, avoiding hearing damage in a strong noise environment. 3. WIDE RANGE OF USE: In people with problems with fragile auricular tubes, soundproof earplugs can also play a certain protective role, reducing the damage of adverse noise and the negative impact on hearing. 4. GREAT MATERIALS: Using soft silicone and sponge, ergonomically designed to fit the ear canal, soft and skin friendly, avoiding swelling and soreness in the ear canal, flexible and comfortable to use. 5. PORTABLE DESIGN: 12pcs of noise cancelling earplug are available, meet your replacement needs. Comes with a storage box, easy to carry, perfect for travel, study, etc. Specification: Item Type: Earplug Material: Silicone, Sponge. Package List: 1 x Storage Box12 x Earplug