Made with skin-friendly, highly flexible silicone material. Wearing them as described in the instructions will further enhance the fit. Suitable for use during sleep, office work, studying, at live venues, during flights, and while riding a motorcycle. ✼••┈┈••✼••┈┈••✼••┈┈••✼••┈┈••✼ #◎Click here for a list of bargain shops◎ ⭐️All items are free shipping❣️ ⭐️Welcome to bulk purchases, feel free to comment❣️ ⚠️Although it is "new and unused," it has been handled by a person once, so Therefore, it is listed as "like new"! The profile contains information about "deals, packaging, shipping, etc.!" --- Earplugs for sleep, soundproof silicone, unisex, sleep aids, noise reduction measures, earplugs 28-28-1000