Innobaby?s Sippin Smart ez flow straw sippy allows ez drinking in any position with its ez flow design. SMART features include: smart straw with weighted stainless ball follows the liquid to provide continuous flow; ez flex smart straw is designed to be leak resistant even when it is flipped; ez grip lid with leakproof silicone seal makes it 100% leakproof; silicone air release valve prevents liquid overflow and guarantees easy flow; wide cup opening and curved base makes cleaning easy; smart straw tip is designed to be durable & comfortable with its bubble shaped curve to prevent slipping while sipping and makes transition easier.; flip top cap keeps smart straw clean; tip resistant base; 10oz capacity with embossed measurements on the cup; BPA-, Phthalates-, PVC-, Lead Free; straw brush included; This set includes; 1 - 10 oz cup with handles; 1 - ez grip lid with flip top cap; 1 - silicone ring for leakproof seal; 1 - silicone smart straw with weighted ball; 1 - straw cleaning brush; Care & Use: Release pressure by pulling on air release valve for ez flow. For leak free feeding, press down air release valve before giving to child; Do not store juice or milk in the cup for extended periods of time as it may cause spoilage; Not recommended for use in microwave; After each use, empty the cup and wash all parts to prevent spoilage, odor and discoloration.; Clean all parts thoroughly before use. Top-rack dishwasher safe; For hand washing, avoid rough cleaning pads or hard cleaning brush to prevent scratches; Do not disassemble straw parts, including weighted ball, when cleaning. If disassembled, be sure to install all parts properly before use.;.