The earbuds are 1:1 mold opening for the real machine, and the tightness is just right with a click. Specification: Applicable model: AirPod pro 1/2 generation. Size: L 14.5*13.5*7.5mm, M 12.5*11.4*7.6mm, S 11.5*10*7.7mm, XS 12*10*7mm. Material: liquid silicone. Quantity: 1/2/3/4 (pair). The package includes: 1/2/3/4 pair of replacement earbuds.