Made from zinc and aluminum alloy metal. They are safe, non-toxic and odor-free.
Size aprrox: large: 3. 54" x 1. 58", medium: 3. 15"x1. 38", small: 2. 76"x1. 18".
Its surface is quite smooth, nice touch feelings in hand, and convenient to insert inside.
Give you the feeling of super stimulation and comfortable. Please note hygiene before and after use.
Can be heated or cooled with water, different temperatures will bring you unexpected feeling.