Narelle Waterproof Box Chain Necklace Silver L: 18'.A modern take on a classic the Narelle Waterproof Box Chain Necklace offers a chunky box chain in a classic gold. Designed to create an effortlessly chic and minimalist look this waterproof necklace is the perfect finishing touch. Waterproof 18K gold plated and made with a specialized PVD technique to withstand the rigors of life from swimming and showering to sweating through your most intense workouts all without ever losing its shine.