Earlier this year, there were a series of reports, on CNN and MedicalDaily, of parents who cracked apart the white valve part of the cup and discovered a lot of nasty mold inside the cup. In response, we rescinded the Best Buy award for this cup, and recommend stopping the use of this cup until Tommee Tippee redesigned the cup. Tomme Tippee has followed through and redesigned the valve on both their sippy cups and bottles. It is now a transparent, two piece valve that can be taken apart for thorough cleaning in between uses. This change should dramatically increase ease of cleaning and help to prevent mold from growing in the valve.
Parents who have the older version of the Tommee Tippee Sippy cup should cease use of it immediately, and contact the manufacturer for a free replacement. Below is the official acknowledgement and response to this issue from Tommee Tippee North America.
Tommee Tippee official corporate response below (Facebook 2/25/16)
We sell millions of Sippee cups globally but we know from recent social media posts, that some people have had problems cleaning the valve. For this we sincerely apologise and we are actively following up on any concerns raised. We're sorry if we haven't managed to speak to you yet but due to high demand it may take us some time to get to your post. For a swifter response please call us using the contact details below.
We want everyone to be happy with our products and we always want to exceed expectations. We've therefore listened to our customers, and will be launching a new Sippee cup in the next few months.
The new cup will have a two piece valve that can be used with different types of liquid, and is easier to clean.
In the meantime, we are making the transparent, see-through valves shown here immediately available to parents that have concerns. The see-through valve will enable parents to see inside, and give you confidence that the valve is clean. We would highly recommend you visit the FAQ's and videos to help you care for your cups.
Alternatively, we will be happy to provide you with a different style cup if you prefer. Either option will be provided free of charge.
If you would like to receive a see-through valve or alternative cup please contact our Careline on toll free, and one will be sent as quickly as possible 1-866-214-1537
Please also be aware the reported problems only relate to the one-piece valve on the Sippee range of cups, and do not affect any other Tommee Tippee product.
(Editor's Note: below is our original review from 3/14)
The Tommee Tippee Sporty Bottle is a great little plastic sippy, that earned our Best Value award. It offered an easy to drink from spout, and pure leak-proof technology, all at an affordable price. This cup was lightweight, easy to hold, and impossible to spill. It has a nice narrow base for cup holder usage, and it is dishwasher safe. The cup scored an impressive 78 out of 100 in our tests, which meant it placed 3rd out of 21 in the cups we reviewed. The economical price, and high scoring features, secured this cup's Best Value award hands down. While it wasn't as cheap as some of the other plastic cups we tested, it was significantly cheaper than the other award winners, and significantly better than other cups.