Features:High quality memory foam tips, comfortable, and secure-in-ear fit The memory foam tips noise isolation offers- superior audio- experience enhanced bass- and good seal block out external noise..Application: for WF-1000XM4 and other wireless Bluetooth-compatible headsets, slow-rebound. Noise reduction, super soft, comfortable and safe, suitable for exercise. Does not interfere with charging- Offers- a superior sound- experience. Package Includes:1Pair x Earphone Earpads Specifications:Size: -S or -M or -LColor: Black or GrayMaterial: SpongeFit for: for WF-1000XM4 EarbudsS-Size: (approx-) Outer Circle Diameter 11mm - Inner Mounting Hole Diameter: 3.8mm-5.5M-Size: (approx-) Outer Circle Diameter 12mm - Inner Mounting Hole Diameter: 3.8mm-5.5L-Size: (approx-) Outer Circle Diameter 13mm - Inner Mounting Hole Diameter: 3.8mm-5.5Quantity: 1 Pair note:Does not include EarphonesDue to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand.Please allow 0-1cm error due to the manual measurment