Nuby's Easy Grip Flip-It has a unique textured base, making it easy for your active toddler to grip. This cup features an innovative, ergonomic shape with easy-grips on the bottle that ensures a comfortable, secure grasp. This revolutionary design is made for the parent on the go and is great for day picnics, hikes, and your child's recreational activities. All Nuby products are made of safe, durable material and exceed all government safety regulations and standards.