Stone Collection 500ml/ 17 oz Featured in a durable stone-like texture for added grip, our stone collection series are bothchic and functional. Vitality's water bottles are designed to be part of your daily carry from work to home, or yoga to errands. Eco-Friendly BPA/BPS-Free and reusable Double insulated technology Vacuum-insulated, high-grade 18/8 stainless steel 24 HOURS COLD/ 12 HOURS HOT Keeps beverages colder or hotter, for you to enjoy No sweat Condensation-free, the exterior will remain dry