Minnie Mouse Light-Up Tumbler with Straw Brighten their snacktime when sipping from Minnie's plastic tumbler featuring a twist-top cap with a lighted dome. Just press the button on the cap to turn on and off. Includes built-in reusable straw. Magic in the details Double-wall tumbler Press button on top dome to light-up/turn off Minnie screen art with arcade pattern Twist top, spill-free cap Minnie Mouse ear hat cap design Lighted dome unscrews from tumbler cap for cleaning and battery access Reusable straw with flared bottom The bare necessities Requires 3 x LR44 button cell batteries, included Wash thoroughly before first use Not microwave or dishwasher safe Hand wash only Twist off dome to remove before washing Do not immerse lighted unit Cup: 5 1/2'' H x 3 1/2'' Diameter (9 1/2'' H including cap and straw) Holds approx. 10 oz