Advanced Filter Zone Design: The Tang Sancai balanced eartips feature a specially designed Filter Zone based on the SHAN system. Developed through rigorous testing, this design ensures precise soundwave pathways for enhanced clarity while reducing unwanted distortions, delivering an immersive listening experience with effective noise isolation that blocks external distractions. Package content: 3 Pairs of Mix eartips . Size : S/M/L . Be sure to check the size guide before placing your order. Secure-Fit Wall Texture & Pressure Release System: The eartips are designed with a unique textured pattern that serves a dual purpose: efficient pressure release for extended listening comfort and a secure, ergonomic fit that stays locked in ear canals during intense workouts. Enjoy hours of fatigue-free listening with enhanced stability. Noise-Filtering Precise Bore Diameter: The diameter of the bore plays a huge part in sound balancing and performance. During development, we analyzed over 10 types of eartips and perfected the measurements for the Tang Sancai balanced version. The optimized acoustic seal actively filters ambient noise while delivering premium sound quality for audiophiles and casual listeners alike. Thick Core Design& Multiple Nozzle Colorways for Easy Sizing: The Tang Sancai balanaced eartips features thicker core for better resistance of transformation as well as increased durability. The eartips come in various nozzle colorways to indicate different sizes, ensuring a perfect fit for every user. Combined with the textured wall design, they offer both functionality and style. Medical-Grade Hypoallergenic Material: Crafted with medical-grade silicone, the Tang Sancai eartips minimize the chance of any allergic reactions. This ensures not only superior sound quality but also a safe and comfortable user experience. The soft touch of the material makes wearing the eartips a blissful experience during workouts or sports, allowing you to forget they are even there. TANGZU Tang Sancai Eartips for Earphones Special earplug texture design - Different color sound guide tubes indicate different sizes. - Harmonic filter area design. - Sealed edges make the sound clearer.