Flexible straw has a weighted end that anchors in the liquid to help young children drink effectively, even when the cup is tilted. Straw is valve-free, making it easy for young children to sip and easy for parents to clean. Handle detaches with a simple twist for placement in most cup holders. All materials and parts are FDA-approved and meet/exceed the US Consumer Product Safety Commission's standards. Minimal parts make the cup easy to clean. Straw-cleaning brush included for added convenience.