Devan—March 10, 2026
These OISIZ 14oz tumblers have been such a hit in our household! From the moment we opened them, my kids were excited about the fun little dolls that come with each cup—it makes drinking water feel playful and special, which is perfect for encouraging them to stay hydrated throughout the day. The design is both cute and practical. The dark blue color is sleek, and the little doll charm adds a whimsical touch that my kids really love. It’s amazing how a small detail like this can make a simple water bottle so much more fun for kids to use. Durability is another big plus. The triple-layer vacuum insulation is impressive—it keeps drinks ice-cold for hours on end, which has been perfect for both school days and outdoor play. I’ve also tested it with cold water and juice, and it really does keep liquids cold for the entire day without condensation forming on the outside. The leak-proof design is fantastic. I’ve tossed these in backpacks, dropped them in the car, and even turned them upside down without a single spill. That’s a huge relief, especially for parents dealing with younger kids who aren’t always careful with their cups. The dust-proof lid also keeps things sanitary, which I appreciate when the bottles are stored between uses. Cleaning is simple, too. Being dishwasher safe makes these tumblers easy to maintain, so I don’t have to worry about complicated hand washing or the charm getting ruined over time. They really are low-maintenance while still feeling high-quality. Overall, these cups are a perfect combination of fun and functionality. My kids genuinely enjoy using them, they stay cold all day, they’re spill-proof, and the little charms make them extra special. I’m definitely planning to get more for family and friends—they make hydration fun, and they’re built to last. 🥤💙 Read more
Mommy of three—March 14, 2026
After careful consideration I decided to order this 14oz kids tumbler. The price did seem a little daunting at $24.99, especially for a child’s cup, but when I weighed it against the cost of cleaning the inside of my vehicle…again…I went for it. Boy am I glad I did! Not only does it live up to my expectations but it far surpasses them. To start with, the size is just perfect for my child’s small hands. The handle makes it easier for him to hold onto than a standard water bottle or juice box. If you’re anything like me, when you read the no-spill part you might have rolled your eyes a little. How many products claim that only to find out later that it’s not true? But in this case, it is true. I filled it with water, held it over my sink, and shook it like my kids would. Not a drop. My favorite part is how easy it is to disassemble and clean. Knowing how easily mold can grow in reusable cups, easy cleaning is an absolute must for me. The straw and valve separate so that you can get the included cleaning brush really in there to give it a good scrub. The little owl/penguin charm on the side is too cute not to mention. It even comes with a card telling about the little guys characteristics which is just fun for kids. Would I order this again? Absolutely, in fact i’ve already ordered another version for my daughter. Oisiz really hit a home run with this adorable cup and I would and do recommend you grab one for the little ones in your life. I am so happy that I did! Read more
Finn G. Ment—March 13, 2026
As a parent, you end up trying a lot of different cups before finding one that works well for everyday use. This OISIZ 14oz kids tumbler has been a very good option for us. The size works well for my 2½-year-old, and the handle makes it easy for her to carry it around herself. It’s also one of the few cups we’ve tried that fits properly in her car seat cup holder, which is surprisingly hard to find. The straw lid design has worked well in daily use. It has been tossed in bags, tipped over in the car, and rolled around on the floor, and I haven’t seen it leak during normal use. The small dust cover over the straw is also a helpful feature when using it outside or traveling. The insulated stainless steel construction keeps drinks cold for quite a while, which is nice on warmer days. The silicone base is another thoughtful feature because it helps protect the cup when it gets dropped, which happens often with toddlers. Cleaning is straightforward since the parts come apart easily, and it has held up well after several dishwasher cycles. The owl accessory is a cute detail and my daughter enjoys using the cup. Overall this has been a practical everyday tumbler for a toddler—easy to carry, easy to clean, and reliable during daily use. Read more
Lissa1215—March 22, 2026
This is a nice sized water bottle for my child. It keeps drinks cold and is easy for him to hold. It does seem take some strength to suck through the straw. He has complained about that. I like how the top part of the straw is silicone and that it has a lid to prevent dirt and spills. Putting the silicone lid on the straw and taking it off is every easy and it seems to fit very well. This is easy to take apart and clean and put back together. The lid goes on every easy, my son is able to fill his own cup up on his own with no problems. This is a great cup for at home or to take out and about. It fits in cup holders and is easy for him to grab and go. It's a good option for at home, travel or even school since it is leak proof. This is a simple water bottle that does a great job for kids. The cute keychain is a nice touch. My son was excited to put it on his backpack. Read more