The b.box Replacement Straw Set is especially made for the NEW b.box sippy cups. This set includes two spare straws, a cleaning brush, and a steel weighted ball. Crafted from PP and silicone, it's dishwasher safe and free from BPA, Phthalates, and PVC.

Please note: These new straws are only compatible with the new matte lids, not the older glossy sippy cup.