One pack insulated, vacuum sealed 10 ounce stainless steel spoutless toddler tumblers keeps drinks cool for 15 hours Drinking from anywhere around the 360 degree rim, like a regular cup, helps support normal muscle development in a child’s mouth Valve automatically closes when child is not drinking, creating a spill proof and leak proof seal BPA free and easy to clean, with no extra valves or parts Liquid flow rate is perfect for boys and girls 1 year old and up Perfect for daycare and travel - fits in cup holders and includes a lid Look for coordinating drinkware, feeding and tableware essentials from Munchkin - makes a great gift Durable materials withstand the demands of active kids