1. High-quality materials: This earplug adopts IDEAFOAM sponge formula and craftsmanship. There are high-density micro-pores inside, which are light and soft, and have a stronger sound insulation effect. 2. Comfort: professional noise-reducing earplugs, enjoy the softness of baby's skin and comfortable sleep. 3. Noise reduction: industry standard intensity noise reduction, average noise reduction 36Db (decibel). Protect your hearing and enjoy a good sleep. Suitable for sleep, construction, ear protection, snoring, and various types of noisy activities. 4. Promote proper hygiene: The plug-in earplugs have a smooth, stain-resistant closed-cell foam skin that helps prevent dust accumulation and improve overall ear safety. Instructions for use: 1. Rub the earplugs back and forth into a uniform slender strip, the thinner the better (remember not to squeeze flat, squeeze flat can not go deep into the ear canal) 2. Wear both hands at the same time, raise one hand backhand Start the upper auricle to straighten the ear canal, rotate the other hand and slowly push the rubbed earplug into the ear canal. 3. Block the bottom of the earplug with your finger for 10 to 30 seconds, and feel the earplug rebound slowly to fill the ear canal How to clean the earplugs: 1. There is no need to clean the earplugs when you use it for the first time, you can use it immediately after opening the box. When cleaning, it is recommended to use a wet paper towel or a paper towel dipped in clean water, cotton cloth, etc. to wipe. If everything is immersed in water, it is recommended to wash with soapy water or clean water. The cleaned earplugs will become larger than before and lose the slow rebound effect, so they must be thoroughly dried. Use after drying. 2. After cleaning, put it in a cool and ventilated place until it is completely dry (usually 1-2 days), it will return to its previous size and have a rebound effect, and the earplugs should not be cleaned frequently. Material: Sponge Size: 2.5*1.5 CM Color: Pink/Red/Blue/Green Package Included: 1/2 Pair Of Ear Plugs