When shopping for a sippy cup, find one that is sturdy, easy to clean, spill-proof, and easy for babies to hold. The fewer parts it has, the better, both for ease of use and safety reasons. Cups with side handles are usually winners, so toddlers can hold them, but some kids prefer ones without. Plastic ones are the most lightweight, but stainless steel cups are another great option because they keep drinks cold. Every product on Fatherly is independently selected by our editors, writers, and experts. If you click a link on our site and buy something, we may earn an affiliate commission.