Soundproof Sleep Ear Plugs Earplugs for Sleeping Special Mute Soft Slow Rebound Student Anti-Noise Protection Anti Snore Earplug

Name: Soundproof earplugs Material: sponge Size: 2.5*1cm Instructions for use: 1. Rub the earplugs fine (not flat) 2. Lift the auricle and insert the earplugs 3. Block it for 10-30 seconds, and the earplugs slowly rebound and fill the ear canal.