Bound Adjustable 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: 1.69 (Oz)Package Dimensions: 6.93 x 2.8 x 0.75 (Inches)Product Material: Iron/Silicone