Features: High-quality memory foam tips provide a comfortable and secure in-ear fit. Memory foam tips offer noise isolation for an enhanced audio experience with superior bass and effective external noise reduction. Compatible with WF-1000XM4 and other wireless Bluetooth headsets; slow-rebound design ensures a snug fit. Soft, comfortable, and safe for extended wear, suitable for exercise and daily use. Does not interfere with charging; delivers a high-quality sound experience. Specifications: Size: S / M / L Color: Black / Gray Material: Sponge Fit for: WF-1000XM4 Earbuds S-Size: Outer Circle Diameter 11mm, Inner Mounting Hole Diameter: 3.8mm5.5mm M-Size: Outer Circle Diameter 12mm, Inner Mounting Hole Diameter: 3.8mm5.5mm L-Size: Outer Circle Diameter 13mm, Inner Mounting Hole Diameter: 3.8mm5.5mm Quantity: 1 Pair Note: Earphones are not included. Due to lighting effects and shooting angles, slight color variations may occur. Manual measurement may result in a 01cm size deviation. Package includes: 1 Pair x Earphone Earpads