15.5” to 16” pit to pit 3 hook closure in the back with two options for the fit Bra liner as shown in photo 14.5” at its longest length measured from the middle down Labeled a medium but fits a small best Rhinestone trim Fabric is even more beautiful in person Material unknown Elastic at the top for stretch and comfort Vintage items might need a wash or dry cleaned depending on care instructions since they have been in storage for some time.