AZLA SednaEarfit Crystal for BOSE Earbuds M Size 2 Uses the Highest Quality Premium LSR Material For QuietComfort Series High Frequency Improvement

[Earpiece for BOSE QuietComfort series] "SednaEarfit Crystal for BOSE Earbuds" is an earpiece developed for BOSE's completely wireless earphones (TWS). The basic design was based on an analysis of the ear canals of 788 people, and the use of the highest quality German-made premium LSR (Liquid Silicone Rubber), which has the characteristics required for an earpiece, has achieved a high level of fitting, low pressure, high sound insulation, high durability, and low irritation. [Uses the highest quality German-made premium LSR] The premium LSR material used is a synthetic/elastic polymer with unique properties such as excellent heat resistance, oxidation resistance, surface tension, and low-temperature flexibility, as well as good dielectric properties.It is soft and low pressure, has moderate frictional resistance and fixing force to prevent falling, is hypoallergenic against itching, and is highly durable. [Internal shape that ensures straight propagation of sound] In terms of acoustics, the unique internal shape ensures straight propagation of sound, improving high frequency characteristics, ensuring a wide sound stage, clarity of sound, and a punchy sub-bass. [6 sizes available and set package for easy selection] Available in 6 sizes: SS/S/MS/M/ML/L. Available in 3 types: 2 pairs of individual sizes, 3 pairs each packaged in 3 sizes, and a package containing all sizes. With its stage-filled sound and beautiful, sparkling style, SednaEarfit Crystal brings out the full potential of BOSE's TWS, while solving problems such as wearing earphones for long periods of time or dropping them with AZLA's unique approach. ＜Notes＞ *Earphones are not included. *Product specifications and accessories are subject to change without notice. Thank you for your understanding. *We do not guarantee compatibility with all earphones or ensure fit in everyone's ears. *Please make sure that the length and size are suitable for you before purchasing.