Stainless Steel Pet Necklace with Crystal Heart-shaped Charm Pendant (Multi Color) Stainless Steel Chain Pet Necklace; Heart-shaped Charm Pendant with Shiny Crystal Elements; Perfect for parties or events, or just making your pet look even more adorable. Size S: Adjustable for pets neck girth 6-10 inches. * Necklace length ajustable by adding or removing chain rings.