Product details Waterproof💧💧💧 Stainless Steel - Waterproof. 18k gold Hypoallergenic Nickel free Size:16'' in length + 3" extender - 5mm width. Designer note Great on her own or in a gathering, the snake necklace is the talk of the party. You won't stop wearing it because it is the best layered or by itself. Style tip: a simple blouse and your fav mom jeans, or throw on a fancy dress. The snake necklace will elevate any outfit for sure, put your smile on and that is all you'll need.