This perfect size and lightweight reusable bottle is made from 18/8 durable recycled stainless steel. Leakproof and perfect for everyday carrying and hydration. Recommended for cold water only. Made with (Recycled Claim Standard) certified recycled materials. Certification ensures a completely certified supply chain of the recycled materials. Total recycled content: 80% based on total item weight. BPA free. Capacity 500ml. Including Certified Sustainably Sourced certified kraft packaging.