A black Pure Linen dress is a type of dress made from the natural fiber of the flax plant. Linen fabric is known for its durability and breathability, which makes it a popular choice for clothing in warmer weather. The black color of the dress can range from a deep jet black to a softer charcoal black. The dress can come in various styles, such as a shift dress, a wrap dress, or a maxi dress. It may have different design elements, such as pockets, buttons, or ruffles, and can be dressed up or down depending on the occasion.