The majority of pipes sold today, whether hand made or machine made, are fashioned from briar wood (Heath Tree - Erica Arborea). Briar is a preferred pipe medium because it is naturally resistance to fire and has an inherent ability to absorb moisture. The burl (tree growth) absorbs water in nature to supply the tree in the dry times and likewise will absorb the moisture that is a byproduct of combustion, creating the perfect smoking experience.