The OXO Tot Sippy Cup Set grows with your child from age 6 months and up. The 7 ounce Sippy Cup with handles is an ideal first cup for babies transitioning from bottles. Its leak-proof valve prevents spills and releases pressure for comfortable sipping. Soft, non-slip handles are angled so babies don't have to turn their wrists too far, and the handles are removable for when baby's grasp develops. When baby is ready to transition from sippy to regular cup, remove the sippy cup lid and replace it with the OXO Tot Training Cup lid. The Training Cup lid has a transparent insert with perforations around the perimeter to control the flow. The OXO Tot Cleaning Set for Straw & Sippy Cups is perfect for those hard to reach Sippy and Straw Cup areas. The straw brush is the perfect length to reach down into all Straw Cups and kids' sports bottles. The lid brush eases into tight spots on the underside of tops and even breast pump parts. The slim-as-a-toothpick sippy-spout explores even the tiniest openings to ensure no drop of juice is left behind. All three tools have non-slip handles so cleaning is easy, even when wet, and hang together on a plastic ring to keep them handy.