The full text reads: "Like a snowflake, every Case Study® Fiberglass Chair is uniquely patterned using a nearly lost art pioneered in 1950. This chair is handmade from thousands of glass fibers. No two chairs are exactly alike."
We debated about going with the fiberglass chairs over the molded plastic (that carries the Eames name) for essentially the same price, and we're glad we made the decision we did. The fiberglass doesn't stick to skin like plastic does, and slight texture is a bit more interesting.