NO ASSEMBLY REQUIRED - Easy to use. You don't have to worry about assembling, and you can wash the silence earplug. 16 Ear Tips in XS/S/M/L, with 2 travel boxes. NOT EASY TO FALL OFF: The lightweight and soft silicone ear plugs are ergonomically designed around the shape of the human ear with a right-sized center to fit the shape of the pinna, breathable and comfortable, and stable to wear, even if you lie on your side or turn over, The sleeping ear plugs not easy to slip off. SUIT FOR ALL SIZES EAR - Our noise reducing earplugs come with ear tips in 4 sizes - XS/S/M/L, It has an ultra-small and ultra-thin design, and unparalleled noise reduction. REDUCE THE NOISE - Noise Reduction can reduce up to 33 decibels,they are great for sleeping,snoring,studying, work, travel, concerts, relaxation, flying discomfort, etc.. THE ULTIMATE COMFORTABLE EARPLUG- Reusable Soft Silicone, you will feel nothing in your ear while wearing these earplugs, No discomfort or pain. You can toss and turn or sleep on either side.