Sternitz Water Bottle - Double Walled Stainless Steel 17 oz - 500 ml. - Perfect for Hiking, Camping, Sports and Everyday use. DOUBLE WALL VACUUM INSULATION TECHNOLOGY - Unique double-walled vacuum insulation technology with vacuum-seal cap keeps your drinks cold for up to 12 hours, hot for up to 24 hours. No matter what the exterior temperature is, your drink will remain the same inside. 100% BPA & PHTHALATE FREE - This bottle is 100% BPA & phthalate free, non-toxic and non-leaching. This bottle are completely safe from harmful toxins. PERFECT BOTTLE IN EVERY MOMENT - Perfect for Hiking, Camping, Exercising, Cross-fit, Gym, Walking or simply bringing your hot coffee/tea to work. The capacity is 17 oz. Is the perfect size. DURABLE - It is difficult for this bottle lose their characteristics of thermos with hits or dents. CYLINDER BOX - The bottle comes with a cylindrical box which makes safe your bottle.