Graf Lantz Wine Glass Markers Rainbow Set of 12 (P/N 4110MX). Made in the USA from Merino wool, these wine glass markers aren't just colorful and fun - they also are naturally stain resistant, anti-bacterial and lightweight. Features include:Made in the USA from the highest quality German merino woolStain, odor and bacteria resistantResilient and lightweightLanolin and keratin create antimicrobial propertiesNatural, biodegradable productSet of 12 assorted colors.