Improved sound quality: The unique silicone material of this earphone case can effectively improve the sound quality, making the sound fuller and clearer, bringing a better listening experience. Comfortable Fit: The ergonomic design conforms to the shape of the ear, providing a comfortable fit even for long periods of time. Replacement Accessory: Designed specifically for the Bowers & Wilkin PI8 Bluetooth headset, it can be used as a replacement accessory for the original ear tips, maintaining the consistency and matching appearance of the headset. Dustproof and waterproof: Effectively block external noise, while preventing sweat and dust from entering the inside of the earbuds, prolonging the service life of the earphones. Multiple size options: Different sizes are available to suit different ear canal sizes to ensure a secure fit and avoid falling during exercise. Product color: black and white Product material: silicone Product packing size: 6*6*2CM Product weight: 45g