925 Sterling Silver Heart Toggle Necklace; Heart Toggle; Puffy Heart 925 Sterling Silver Heart Toggle Clasp Necklace 4 Sterling Silver Heart Toggle Clasps, 925 Silver Toggle Clasps, Heart 925 Sterling Silver Heart Toggle Necklace; Heart Toggle; Puffy Heart. Pieces: 1 piece Includes: A matching box. Material: 925 sterling silver Care instructions: Avoid wearing during exercise, as sweat will react with the jewelry to produce silver chloride and copper sulfide, which causes the jewelry to deteriorate and corrode over time. Imported Product Measurements (Measurements by inches) & Size Conversion Size Chain length Extension chain length ONESIZE 15. 7 2