Comply Ear Tips GEN3 for Sennheiser True Wireless (Momentum 4, Momentum 3, Accetum) (TW-400-C) 【TrueGrip (without earwax guard)】 ERGONOMIC DESIGN: Excellent fit prevents external noise and provides high-quality sound. COMPLYTM FOAM: Unique shape-retaining memory foam that reacts to body temperature, achieving ultimate comfort, fit, and sound isolation. RECESSED CORE: A shorter core than before achieves both a perfect fit and compatibility with the charging case. 【Unique Oval Shape】 COMPLY tips achieve a custom shape with a special core, providing a perfect fit and comfort in your ear canal. You can enjoy music freely without worrying about accidental drops. Installation is also very easy with one touch. 【Comfortable Wear】 COMPLYTM tips are made of shape-retaining foam that reacts to body temperature and expands to fit the unique shape of the ear canal, creating a dynamic fit and easily improving the wearing experience. COMPLY tips provide a better grip than silicone. 【Soft Comfort】 Made of body-heat-activated memory foam that is 30 times softer than silicone. Enables long listening sessions. 【External Noise Isolation】 With our unique viscoelastic technology, COMPLY foam tips maintain a seal that adapts to changes in the shape of the ear canal due to sweat or temperature changes, ensuring that external noise and the environment are never a distraction, allowing you to focus on your audio and enjoy your favorite music to the fullest without raising the volume to harmful levels. I have no memory of using them, and I haven't used them for a while, so I am selling them as part of a decluttering effort. Thank you for your consideration.