Banana Republic long sleeved True Wrap blouse Sz S blue floral Elastic at waist on back. It has a hook and eye also. The blouse measures 19” at bust (measurement taken across the back). It should comfortably fit up to a 34-36” bust. It is 22” long and when fully tied, it measures 13” across the waist laying flat. It is made of 100% polyester and is machine washable.