Natural material buttons, timeless basics! Corozo Button Available in several colors Size: 20 mm in diameter Care advice: Before dry cleaning your garment, it is advisable to remove the buttons. If you machine wash them, wrap them in household aluminum foil, wash the garment inside out to avoid shocks, no soaking, gentle spin, hang immediately. What is Corozo? A very hard and white substance, extracted from the perisperm of the fruits of a South American palm tree. It is also called vegetable ivory.