Features: 1.100% brand new and high quality; 2. The inside of the earplugs is designed with high density micro-bubble holes.It can also keep the ear canal breathable during wearing, which can effectively improve the noise reduction effect; 3. The temperature-sensitive memory foam earplugs will adapt to the contour of the ear canal according to the ear canal temperature; 4. Skin-friendly polyurethane, soft enough to forget to wear; 5. Experts suggest that wearing earplugs for a long time is easy to breed bacteria and damage the ear canal. It is recommended that those with oily ears should replace a new pair of earplugs every week. Half-month replacement for dry ears - new earplugs. Specification: Product Name: soundproof earplugs Product Packaging: bottled Product Material: PU polyurethane Quantity of roducts: 24/60/120 PCS Package includes: 24/60/120 PCS Soundproof Earplugs Note: 1.Due to the different monitor and light effect, the actual color of the item might be slightly different from the color which is showed on the pictures. 2.Please forgive 1 cm/0.39"-3 cm/1.18" measuring deviation due to manual measurement.