Dr. Brown's Milestones Cheers 360 Spoutless Transition Cup, Travel Friendly and Leak Free Sippy for Babies and Toddlers, Green and Pink, BPA-Free, 10 oz/300 mL, 9m+

We've been using this brand/type of cup for years for my autistic son because sippy cups aren't old for teeth, but if we give him an open cup, he'll dump it or play in it. He was able to figure out how to use these pretty easily and they're easy to drink out of. I'd say they're about... 97% spill-proof. If you drop them on the floor, they can splatter some liquid out, but not much. The silicone seals pretty well and stops it from leaking if it's lying on its side. They're pretty easy to take apart to clean, and to put back together. You have to make sure to take the silicone piece out to clean it because we didn't know that when we first got them, and we got mold spots. They're dishwasher safe, but I almost always hand wash them to help them last longer. If the silicone starts to get cloudy, you can soak it for a while in hot/warm water with white vinegar, then clean with soapy water, and it clears up the cloudiness. Also, another thing I didn't know is that you're supposed to replace them every... 6 months or something like that, I forget exactly how long, but especially if they start showing wear or scratches/breaks/tears, because bacteria can get in there, and then you can't get them fully sanitized. Overall, very sanitized with them. I just wish I could find a non-plastic option that wasn't insanely expensive because we've been trying to eliminate plastic dishes from our household due to microplastics, and I haven't found a good alternative for this type of cup in non-plastic that my son can use without spilling or opening. 9/10 (minus 1 point for being plastic)

I recently bought the Dr. Brown's Milestones Cheers 360 Training Cup (2-pack) for my 11-month-old, and it’s been a game-changer! The leak-free 360° spout allows sipping from any side—no more spills when she flips it over. The silicone seals work perfectly, and even after being tossed in her diaper bag, not a drop has escaped. The ergonomic design is easy for little hands to grip, and the soft silicone spout is gentle on gums. I love the color assortment—pink and turquoise—so we never mix up cups. The 10 oz size is just right for juice or milk, and cleanup is quick and simple (just hand-wash or toss in the top rack of the dishwasher). Overall, sturdy, user-friendly, and stylish—Dr. Brown’s knocked it out of the park with these! Highly recommend for any toddler learning to sip independently.

Bought them as a gift for my 1-year-old nephew. He uses it every day, and my sister loves that it doesn't spill; they even bought 2 more. She does mention a couple of drops may fall, but it's way better than any other cup.

I would give it 5 stars but only giving it 4 because when the kids do drop their cups it does leak alittle. The color is great. The weight isn't heavy for the kids. It's needs a grip for a better easy hold on it. It is easy to use and clean. The function is good.

Love this cup for my son. Doesn't leak and holds up very well in the dishwasher.

The absolute best cups ever. the minute my child could hold things between his hands, he’s been using these cups. they’re extremely easy to use and we’ve had them for like a year and a half now. easy to clean as well! It disassembles completely and i’ve washed the plastic cup part in the dishwasher just fine, but i hand wash the rubber lid part just in case. The only downside is that if it gets slammed on the ground, it will spill. most babies slam things on the ground so many spills have happened. ALSO if your child thinks of chewing on the edge, might as well assume it’s always going to leak. we bought these purple and pink ones because we already had some blue ones but my son chewed up the edge and we needed replacements. BUT i just found out you can buy replacement seal thingies for $3 on the Dr. Brown website. so that’s a plus!

Well made, do not spill, fast shipping. Recommend seller

Love several things about these cups, the way they stack, the straight sides that are easy to clean. But... if they are dropped, the liquid splashes across the floor. If they are dropped into the diaper bag and something presses against the top, they leak.