[Ergonomic Design] Our special patent oval earplugs are designed on ergonomics and optimal fit in the ear canal, they can mold to the ear cavity to maximize comfort and help provide a fit sure to block noise reduction effectively for proper fit With a special grooved stem for easy pinching, ideal for side sleepers, snorers, studying, working, etc [LIGHTWEIGHT ULTRA COMFORTABLE] Ergonomic tri-flange earplugs are designed to stay in place - even if you're a side sleeper, and are made from a soft, lightweight material that's comfortable to wear Added comfort, let needed sounds in (like your alarm clock) while keeping distracting noises out [REUSABLE WASHABLE] Comes with a sturdy plastic case to keep your earplugs safe and clean wherever you sleep whether you are at home or traveling Washable and reusable, clean them regularly with warm soapy water to ensure you can use them for a long time use guarantee to protect your hearing from loud noise, ideal for sleeping, snoring, swimming, studying, shooting, air travel, loud events, concert, motorbikes, etc Number of pieces delivered: 2 pairs colour: grey