You may have seen this product before but it's new to me. A few weeks ago Blaire's sister in law, showed me this product that she uses to label her girl's sippy cups. So I decided to order some after hearing such good things about it. They're called Bumpy Name Orbit Labels and now I'm loving them for my kid's sippy cups too. They are non-adhesive, reusable, dishwasher safe and can not be removed by your toddler. I ordered the blue labels with a smiling face on it and plan on ordering the green ones soon. So far I don't have any complaints. Last night I noticed on the episode of Jon & Kate plus 8, they had them on all their kid's sippy cups. Here's the website if your interested and want to order some http://www.inchbug.com/.