Our cups are INSULATED TO KEEP DRINKS COOL LONGER. With double-walled insulation, these Stage 3 cups keep drinks cool twice as long* as a regular cup, making them great for active little ones. The STREAMLINED ERGONOMIC DESIGN of Stage 3 cups make it easy for those little hands we love so much to hold them. These cups also feature unique and fun designs, like zoo animals and undersea creatures, that your child will be sure to love!