Feature: 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 pair of earplugs every week. Half-month replacement for dry ears - earplugs. Specification: Product Name:soundproof earplugs Product Packaging:bottled Product Material:PU polyurethane Quantity of roducts:24/60/120 PCS Color:Pink,Green,Multicolor 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. The merchant warrants that their products comply with all applicable laws, and are offered only if they comply with Joom's policies and EU Product Safety and Compliance laws.