Every Henry Dean object is created out of mouthblown and handmade glass. The use of a wooden mould is a very primitive technique to create glass objects and has to be performed by the skilled hands of real artisans. Each time this mould is used, it burns out a little bit, thus giving each object its unique, handmade character.
The small imperfections and bulbs you may encounter in a glass or vase are a result of the artisans working method and are a part of every object's character