Leak-proof drinking bottle for children. The Sigg Shield One drinking bottle is the perfect companion for all leisure activities and school. With the One closure, the water bottle can be operated with one hand: this applies to carrying, opening, drinking, closing, and securing the bottle. Additionally, the drinking bottle is suitable for carbonated beverages. The wide opening makes it easy to clean and fill the bottle. It is leak-proof, ensuring that the backpack stays dry even during more active times. The water bottle is single-walled and made from food-grade 18/8 stainless steel, making it incredibly lightweight. The children's drinking bottle contains no harmful substances, including phthalates or estrogen-active substances.