Plantronics Voyager Legend headphones with interchangeable earbud kits are available in 3 sizes.Earbuds for Plantronics 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 ReplaceStep one: Earkits knot snaps into earphone slots.Step two: Press the earbuds and then clockwise,locking. Unload otherwise.Colour:Black and transparentMaterial:Silicone and spongeLarge size 15MMx10mm medium size 14x9mm small size 12x9mmPackage Contents:1x large earplug1x middle earplug1x small earplug3x spongeOnly the above package content, other products are not included.Note: Light shooting 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.