This product is a vintage 1960's Mattel Barbie Original Black Helanca swimsuit, a part of the Ponytail Barbie product line. It is a single unit antique piece of swimwear made of Helanca material, designed for Barbie the fashion doll. This swimsuit is in excellent condition and is a must-have for collectors of vintage Barbie clothing from the 1960s, especially those who appreciate the iconic black color and original design. Made in Japan, this swimsuit is a rare find and a unique addition to any Barbie doll collection.