Our sleep care earplugs contain PET. It can be suitable for long-term wear and fits comfortably into the ear canal. Improve sleep quality and reduce distractions. Small design, easy to carry. Easy to clean and comfortable to use for a long time. The way to use it is simple: Insert the earplug directly into the ear canal to ensure a good fit. And can be suitable for travel, sleep and work. Optimize your private time and enjoy the peace and quiet. Enjoy quiet noise at all times in different situations.