Voyager Legend headphones with interchangeable earbud kits are available in 3 sizes.Earbuds for Voyager Legend wireless Bluetooth headset earbuds BUD tip gel Buds tips eargel earbud earbuds Bluetooth earbudsCompatibility is only Voyager Legend. Soft silicone earplugs for a comfortable fit all day long. Your headphones stay fresh and comfortable for easy installation and replacement.Soft silicone foamInstall and Replace: Earkits knot snaps into earphone slots.Step two: Press the earbuds and then clockwise,locking. Unload otherwise.Colour:Black + transparentMaterial:Silicone + spongeLarge size 15MM*10mm; medium size 14*9mm small size 12*9mmPackage Contents:2x large earplug2x middle earplug2x small earplug6x spongeOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.