Your little one will find the transition from bottle to cup easy thanks to nuby's no-spill flip-n-sip cup’s unique contour shape, designed to fit their small hands. The soft sipper straw is protected from contamination by a uniquely designed and easy-to-use flip top cover. This cover simply slides back and rests in the lid of the cup, allowing the sipper straw to “flip” out for use. Great for travel and short trips. Bpa free.