Nuby No-Spill Sippy Cup with Flex Straw - (3-Pack) 10-Ounce Bottles - Sippy Cups for Toddlers 12+ Months - Neutral Color Training Cups for Toddlers

All of our kids are grown, but we have nieces and nephews with little ones, so we needed something reliable for when they visit. Once you get past opening the packaging, it’s smooth sailing. These are easy to clean and, most importantly, help prevent leaks and spills throughout the house. A practical, stress-free solution for hosting little guests.

The soft straw top HAS to be perfectly lined up inside the round screw on cap. Otherwise it does leak. GREAT CUPS!!!!

Our family's favorite cups, my children used these for years. If they got chewed on or yucky we could just replace the straw and top rubber portion through the company website. After trying multiple brands and types, these proved to be the best since they have a low chance of leaking even when my kids knock them over.

Both of my kids used these for their milk cups when we transitioned them from breastfeeding. That worked perfectly. Once you know how to take them apart and put them back together, very easy cleaning. Decent quality. Only problem is the stopper inside the straw either gets bitten out by my kids or can't withstand my dishwasher. I'm afraid my kids have eaten the sylicone straw bits. Not leak proof after the inside of the straw is missing. Does not handle the air pressure in an airplane.

Great starter cups and great price. Easy to clean. I had it leak once, but I think it's because water stayed on the top portion and when my little bent the top portion the rest came out. Worth the price.

Really hard for my baby to suck the water out. They have to bite it in a very specific way but my baby doesn’t bite straws so unfortunately she struggles with using it. It had strong suction so you get a lot of backwash. Definitely doesn’t spill though. It’s great for kids older than two who know how to bite the straw in a specific way

We use these cups for our toddlers milk. They hold up really well and are just 4 pieces the cup the lid, the silicone nipple, and the straw. It holds any liquid we use it for milk because it doesn’t leak nor spill holds about 10 to 12 ounces of how full you want it to be. The design is good for their hands to hold and carry. The only sidenote I have is if your child starts teething and breaking new teeth, the nipple will need to be replaced because they can puncture the leak trough top and your Bottle will not be leak proof anymore, but those are easy to be changed out.

I had high hopes for the Nuby No-Spill Sippy Cup with Flex Straw, but it was a huge disappointment. Despite being marketed as “no-spill,” it leaks constantly—especially when tipped over or shaken even slightly. That completely defeats the purpose of buying a spill-proof cup for a toddler. The flex straw is another major issue. It’s difficult for young children to use because the suction required is too strong, which leads to frustration and refusal to drink from it. On top of that, the straw traps liquid and mold easily, even with regular cleaning, making it unhygienic and impractical for everyday use. Cleaning the cup is also a hassle. The multiple parts, especially inside the straw, are hard to fully clean and dry. After a short time, the cup develops an unpleasant smell despite thorough washing. For the price, I expected much better quality and functionality. This cup caused more mess and frustration than it solved. I would not recommend it and will not be purchasing it again.