VINTAGE WATCHES TRAIN BRACELETS Replacement strap compatible for SWATCH 12mm 17mm 20mm PIERO MAGLI 9 Models FLEXI WATCH BRACELETS web widths : 12MM X 1 PIECE 17MM X 6 PIECES 20MM X 2 PIECES WILL BE SENT WITH VELVET CASE. See illustration THICKNESS APPROXIMATELY 4 MM