AZLA SednaEarfit Crystal for TWS [Ear Tips, M Size, 1 Pair] High-Grade Ear Tips Using Premium German LSR Material, Designed for True Wireless Earphones ■ "SednaEarfit Crystal" with the keyword "ZERO Pressure Design" Ear tips are a crucial factor in determining the final sound quality of earphones. The "SednaEarfit" series is based on a basic design and shaft structure derived from data analyzing the ear canals of 788 people, achieving a high level of fitting and secure attachment to the earphone nozzle, while also improving sound insulation. Furthermore, its unique shape ensures the direct propagation of sound, improving high-frequency characteristics along with natural tones. The latest model, "SednaEarfit Crystal," aims for the highest quality, with the keyword "ZERO Pressure Design," making it the most comfortable to wear for extended periods in the series. This ear tip, with its sound that fills the stage and its beautiful, shining style, maximizes the potential of the earphones while addressing modern issues such as long-term earphone wear and drops with AZLA's unique approach. *Earphones are not included. ■ Premium German LSR Material Used SednaEarfit Crystal, after extensive research and repeated prototyping and testing to achieve the ZERO Pressure Design, uses premium German LSR (Liquid Silicone Rubber), which possesses the characteristics required of ear tips at a high level. This German premium LSR is a synthetic, elastic polymer with inherent properties such as excellent heat resistance, oxidation resistance, surface tension, and low-temperature flexibility, as well as good dielectric properties. It is dense yet soft, reducing ear fatigue even after prolonged use, preventing drops with moderate friction and secure grip, minimizing irritation and allergies, inhibiting bacterial growth, and achieving high durability at a high level. I tried them on once, but the size was slightly off, and I didn't use them, so I left them for a while. They had some dust on them, so I washed them lightly. (I think you can see water droplets in the image.) I am selling them as part of a decluttering effort. Thank you very much.