Plugs made of wood are almost always preferable as they are light in material and they let the skin breathe. This plug is perfect for almost everyone. It's available in sizes starting from 6g (4 mm) all the way up to a size as big as a beer mug. In other words, you need a stretched hole in the ear of at least 6g (4 mm). 

This plug is made of saba wood, a reddish-brown wood. The veins of the wood run softly across the surface and shade in the reddish-brown colors, ranging from light brown to almost dark red. The plug is double flared, which means that it has a slight arc on the edge so that it fits your ear comfortably.