This 16oz FreeSip Water Bottle is truly something special! The leakproof bottle is made with 100% stainless steel and BPA-free materials and is designed with triple layer insulation to keep your little one's beverages cold for up to 24 hours! With an easy to sip from patented spout with a built-in straw that lets you sip or swig, a pop-up leak-free lid that features a wide opening for easy cleaning or adding ice, and a convenient carry loop that doubles as a lock when closed, this playful water bottle is sure to stay secure throughout the ups and downs of your little one's day!