Multiple core sizes (100 200 400 500 etc.) allow you to find the perfect fit for your earphones. 400-Series fits Beats by Dre Skullcandy Audio-technica and more. Find your compatibility here: Complyfoam.com/Compatibility</br>The original earphone foam tip. Made in the USA (of U.S. & imported goods) using proprietary memory foam materials for the ultimate in ear headphone upgrade</br>Isolation replacement eartips are engineered to create a custom in-ear fit to block out external noise and provide a superior audio experience with enhanced bass</br>Super-soft memory foam reduces earphone irritation and fatigue. Comply foam is 30x softer than silicone tip material so you have the most comfortable earphones</br>Body-heat activated memory foam adapts to ear canal to provide a perfect seal and snug fit to keep your earphones in place</br>Breathable Memory Foam for Supreme Comfort</br>Secure stay-in-ear fit for extended wear</br>Superior noise isolation for private listening</br>Flexible core to fit most earphones</br>Fits select earphones from Audio Technica?? Denon?? JVC?? Monster?? Sennheiser?? Skullcandy?? Sony??V-moda and more</br></br>Product Description</br></br><br/><b>WEAKNESSES OF MOST EAR TIPS </b><br/> Uncomfortable earphones<br/> Lack of proper seal and fit in ear canal<br/> Poor sound quality from earbuds<br/> In ear headphones fall out or do not stay in place<br/> Inadequate noise isolation causes unsafe listening volume<br/> <br/> <br/><b>BENEFITS OF COMPLY PREMIUM FOAM TIPS </b><br/> Inventors of the original foam earphone tip and pioneers of memory foam tip technology<br/> Made in the USA (of U.S. & imported goods)<br/> 100% better grip than silicone tips = stays in ear during workouts<br/> 30x softer than silicone material = Extremely comfortable and no ear pain<br/> 2x external dB reduction = enhanced sound at lower volumes<br/> Safer listening <br/> Body-heat activated foam conforms to shape of ear canal for a secure fit<br/> Creates a perfect seal for enhanced sound qua