Each of the heart shaped aluminum molds holds 1/2 c or 4 oz. They are copper tone aluminum, smooth pattern and have a hook to hang if you choose. Molds were made by Mirro Manufacturing in Manitowoc, WI.  Measure 3" x 3.5" wide x 1" deep.  Buyer is purchasing 2 molds. Look for other Mirro products or molds in my booth.