Best Stainless Steel Sippy Cup Options!! When it comes to choosing the best stainless steel sippy cup there's a lot to consider in terms of your child's mouth and facial development, spills, and keeping them clean. The good news is, we've spent a long time testing out sippy cups and sippy cup alternatives to round up our favorite options in guiding you to the right cup for your toddler. Visit theconfusedmom.com for all the details! LTKbaby LTKkids LTKfamily