◎ 【Lightweight design and compact size, with storage case】 Weighing only 1.9g, you'll forget you're even wearing them. ◎ 【Ideal for these situations】 Perfect for sleep, concentration, relaxation, travel, commuting, those sensitive to noise, and those with misophonia. Also recommended for live music events for those who dislike loud volumes, as they don't completely block out sound. Can be used in saunas and other high-temperature environments. ◎ 【Comfortable 100% silicone】 Won't fall out even when tossing and turning in your sleep or lying on your side. With a 98.7% noise reduction rate compared to not wearing them, you can instantly relieve stress from noise just by putting them in your ears. ◎ 【Noise reduction specialized for sleep and concentration】 Eliminates unpleasant noise and distractions during sleep. Not completely soundproof, so you can still hear necessary sounds like alarms and calls, allowing you to enjoy a comfortable and pleasant daily life. Also, they are washable and easy to clean, allowing for repeated use. ◎ 【How to use】 1. Attach the appropriate size ear cap to the earplug body. 2. Insert into your ear with a twisting motion. ◎ 【Set contents】 Main unit * 1 set, ear caps 3 sizes S/M/L, case * 1, Japanese instruction manual Used once for testing and disinfected. The product is almost new. Please refrain from purchasing if you are concerned about minor details.