【Deep Sleep & All-Around Soundproofing Care】ZEROPLUS Cocoon earplugs utilize advanced soundproofing technology to achieve a noise reduction of up to 26dB (NRR) (compliant with US ANSI S3.19-1974 standards). They are effective for improving sleep quality, supporting concentration, and protecting hearing, making them ideal for noise-sensitive individuals. They effectively reduce unwanted noise and provide tranquility in all daily situations such as sleeping, studying, working, and traveling. (*Does not completely block all sounds.) 【Perfect Fit & Lasting Comfort】Designed with a curve that conforms to the ear canal, and available in three sizes (S/M/L), you can achieve a perfect fit. They are designed to stay in place even when tossing and turning or running, and there is no pressure even when sleeping on your side. They can be worn comfortably all day long, and the soundproofing effect is maintained. 【Wide Range of Uses & Ideal for Gifts】Useful in various environments such as deep sleep, snore prevention, studying, airplanes, offices, concerts, lawn mowing, and motorcycling. The included storage case with a silicone cord makes them easy to carry. They are also a great gift for sensitive individuals or those working in noisy environments, and are well-received for Father's Day, Mother's Day, Respect for the Aged Day, Christmas, etc., with their stylish packaging. 【Skin-Friendly Food-Grade TPE Material & Eco-Friendly】Made from German-made, FDA-approved food-grade TPE material. They are gentle on sensitive skin, easy to insert, waterproof, hygienic, and reusable. They support an environmentally conscious lifestyle. 【Specifications & Set Contents】 Colors: Black, Orange, Purple ・Storage case with silicone cord (1) ・M size earplugs (1 pair) ・S/L size replacement ear tips (1 pair each) ・Instruction manual (1) Whether traveling or in daily life, they are your ideal soundproofing partner, delivering a quiet environment in all directions.