Avent Bendy straw cup can be easily assembled and disassembled. All parts are completely dishwasher safe, for your convenience.The Philips Avent Bendy straw cup is made from completely BPA free materials. The lower part of the straw is bent so that the straw easily reaches the liquid which allows you to drink in a natural drinking position.The straw has an integrated anti-leak valve to prevent spills. The flip top protects the straw and prevents leakage on the go. vent Bendy straw cup allows healthy oral development and exercises mouth muscles, building oral strength.* Developed with experts to make it our best straw cup possible.