I really like these. They are age appropriate for my older child but still allow him to drink safely. He took to them immediately. We use the tumblers, lids, and straws.
Rigid, high-quality, graduated spare tumblers for the Sip-Tip|||Need a spare tumbler for your Sip-Tip®? These high-quality tumblers have graduated marks on their side to monitor fluid intake up to 8 ounces.