Wolfard Oil Lamps are hand-blown from borosilicate glass (known for its strength and clarity) using an exclusive "in-flame" glassblowing technique, which requires a higher degree of skill than other art glass methods. Wolfard lamps are a classic of American design and were even part of the Whitney Museum of American Art exhibition "High Styles: Twentieth Century American Design." All are beautifully hand-crafted and designed to be treasured for generations.