Bound Nipple Clamps are for erotic and stimulating sensations. Made from nickel-free metal, Bound's clamps feature silicone tips for a better comfort and fit. Available in assorted shapes and colors.Product Weight: 1.34 (Oz)Package Dimensions: 6.9 x 2.8 x 0.71 (Inches)Product Material: Iron/Silicone/Plastic