It holds 12 ounces and is made of BPA-free stainless steel, durable enough for kids to take anywhere they want. The comfortable silicone spout has a cover to keep it clean and help protect from germs, which opens at the push of a button but will not leak when it is closed. Vacuum insulation keeps cold drinks cold for longer, and prevents condensation from forming on the outside, eliminating messy water rings. The kids bottle fits in most car cup holders and has a built-in carry handle, which folds down out of the way when it is not in use. To keep the artwork bold and bright and to preserve the vacuum seal, we recommend hand washing; do not microwave.