The Simple Modern Trek Tumbler is double walled and vacuum insulated to keep your child’s drink hot or cold for hours. The cup is outfitted with an ergonomic handle that is aesthetically designed for comfort. It comes with a straw lid and removable straw so they can enjoy their favorite beverage on the go. The Trek is made from 18/8 stainless steel and fits standard cupholders, and with a variety of color options, one for every day of the week!