Earplug material: PU Earplug size: 1.3* 2.5cm Number of earplugs: 120 Bottle material: PET This earplug supports washing, please use neutral liquid such as water, tap water to wash, and Put it in a cool and ventilated place, and it can be used after it is fully dry. The earplugs are made of environmentally friendly polyurethane materials and have undergone strict testing and testing. They are non-toxic, harmless, hygienic and safe, and can be used with confidence. The earplugs use a special slow-rebound memory foam formula. The earplugs have high material density, good sound insulation, slow rebound time, and are soft and comfortable. Earplugs are professional sound-isolating earplugs with long service life. Each pair of earplugs can be reused. In order to keep the ear canal clean and hygienic, we recommend that you replace 1 pair of earplugs after a period of use. How to wear Use your index finger and thumb to make them thin; The other hand lifts and holds the ear and inserts it upwards, then put the rounded earplug into the ear bud and insert it into the ear; The earbuds are fully unfolded and shaped