http://www.ebay.com/itm/281399878149
This vintage swimsuit is made of wool. It has a wool belt with a hammered texture buckle. There is a flapped coin/key pocket, and a built in supporter.

Waist (unstretched): 13″ (doubled = 26″)
Waist (fully stretched): 18″ (doubled = 36″)
Rise: 14″
Side Seam: 9″