Bottle to Sippy Cup with a Conversion Kit

Quick answer

Use a conversion kit like the Converts Baby Bottle to Sippy Cup - Orange to turn your existing bottle into a sippy cup, making the transition easier and more affordable.

Steps to convert your bottle to a sippy cup

1. Remove the bottle nipple and ring: Unscrew the existing nipple collar from your Thinkbaby bottle. Set aside the nipple and ring. Common mistake: trying to attach the conversion spout over the nipple. Always remove the nipple first.
2. Attach the conversion spout: Take the soft, medical-grade spout from the conversion kit and screw it onto the bottle using the included ring. Ensure it's tight enough to prevent leaks. Check that the spout's cross-cut opening is facing upward for proper flow.
3. Test with a small amount of water: Fill the bottle with a small amount of water (or breast milk/formula) and let your baby try the new spout. Supervise the first few uses to ensure they adjust to the no-spill design. If your baby seems frustrated, try tilting the bottle slightly to help liquid reach the spout. The cross-cut design requires a gentle suck.

Product facts

• Converts Baby Bottle to Sippy Cup - Orange: Free of Bisphenol-A (BPA), phthalates, nitrosamines, lead, PVC, PET, and biologically harmful chemicals. Fits all Thinkbaby 5oz and 9oz bottles. You get a safe, non-toxic sippy spout without buying a whole new cup, and it works with bottles you likely already have.