These are unused items from my home. I am listing them because I have no plans to use them. They are new and unused, but have been opened for photography and to check the contents. Brand: Quietide Product Name: Live Earplugs, 23dB Noise Reduction, Music Live, Reduces Noise During Work, Relieves Hyperacusis, XS/S/M/L Sizes with 1 Set of Ear Tips Each, Unisex, With Storage Case, For Live Music, Music, Studying, Work, Airplanes, Washable, Reusable, With Japanese Manual Q30CBK Triangle Type, Red Quoted from the product page below: [Unique Metal Filter Earplugs] Quietide ear protectors are equipped with a uniquely developed SNR23dB filter. Designed for general music fans, it reduces sound pressure by approximately 23dB. It protects the hearing of those who enjoy music at high volumes for extended periods. By wearing these live earplugs, the sound quality remains unchanged, allowing you to enjoy the stage with peace of mind at live events, festivals, clubs, and other venues, while preserving the original sound quality. 23dB is a good level of sound insulation for concerts, studio drum practice, and band rehearsals, effectively mitigating loud environmental noise. *Instead of muffling sound like sponge earplugs, it reduces all frequency ranges by 23dB, allowing you to enjoy your favorite band's music while minimizing the risk of noise-induced hearing loss and tinnitus after live events. [Ergonomic Design for Comfortable Fit] The earplugs feature an innovative ergonomic design, born from thorough analysis of ear angles and shapes, making them uniquely suited for ear canals. They provide maximum comfort and a secure fit that effectively blocks noise. Furthermore, they are made of ultra-flexible silicone material, so you won't feel pressure or discomfort in your ear canals even when worn for long periods. The stylish and discreet design reliably protects your hearing and fits comfortably in your ears, making them unlikely to fall out even when running, dancing, or moving freely. [Comes with 4 Sizes of Ear Tips & Reusable] To ensure a safe and optimal fit according to your ear size, four different sizes of ear tips (XS/S/M/L) are included. (M-sized ear tips are already attached to the earplugs). They are compatible with various ear shapes and are unisex, allowing you to choose the size that best fits your ears.