The water bottle from Polo is made of stainless steel material that does not break or rust over time. Due to its material, it is not affected by acidic drinks like fruit juices, unlike aluminum. Additionally, it is also a thermos which has the property of maintaining the liquid's temperature for a long time, such as during summer at the beach. It also features a straw for easy and controlled flow when the child drinks. Its material has technology that does not contain the harmful chemical substance BPA, making it safe for liquids.