?Tips?Earplugs can block out some noise to an acceptable volume, but they're not completely quiet. Remove filter before cleaning (portable installation). Red earplugs have double ear caps with random(black/red). ?Fit your ears?Silicone earplugs fit perfectly into your ears, and when you wear them correctly, they don't stick out of your ears. Wear different sizes depending on your ears. ?Widely used?Earplugs are versatile and suitable for a variety of activities, including sleeping, business trips, concerts, motorcycle riding, filming, working, studying, showering, swimming, and other noisy places. They're also noise-cancelling earplugs, so you can focus on your space without any distractions. ?Safe and reusable?Our earplugs are made of ultra-soft, medical-grade, environmentally friendly silicone material, which provides a delicate touch, reduces ear swelling, and can be cleaned repeatedly. Our sleep noise cancelling earplugs come with four pairs of soft silicone earplugs in S/M/L/ double size, and a small carrying case, making them the perfect travel companion. ?Professional noise reduction?Noise reduction earplugs contain filters, using international professional filtering technology to effectively filter various noises that disturb sleep and help you enter your own space. Reduces noise by up to 30db, blocks most noise to quiet and peaceful levels, protects your hearing and enjoys an immersive experience.