Zak Designs Kelso Toddler Cups For Travel or At Home, 15oz 2-Pack Durable Plastic Sippy Cups With Leak-Proof Design is Perfec

4.6 4.6 out of 5 stars | 30,306 ratings

Price: 15.99

Last update: 03-13-2026


About this item

  • SIZE: The set contains two Zak tumblers that are 3.16 inches in diameter and 6.67 inches tall. They have a capacity of 15 ounces.
  • MATERIAL: The durable tumblers are made of plastic with silicone straws. They're dishwasher safe, can be disassembled for easy cleaning, and should not be microwaved.
  • LEAK-PROOF DESIGN: The silicone straw has a built-in valve that allows liquid to flow when drinking and prevents accidental spills when the tumbler is tipped over. The straw is also soft and comfortable for kids to drink from.
  • AT HOME OR ON THE GO: The straw tumbler is suited for travel, since it won't leak and fits in car cup holders while keeping drinks easily accessible. It's also great for drinking beverages at home without worrying about stains or nearby electronics.
  • LIFESTYLE: Zak Designs drinkware makes hydration fun! These tumblers are a great gift for kids just graduating from sippy cups. The tumblers are fully reusable--no more disposable cups--and a fun addition to the daily routine.

Top reviews from the United States

  • Great toddler cups
    These are great cups! They are leak proof and very easy to clean I put mine in the top part of my dishwasher after taking the lid and straw out and they put back together fast and easy. My son had this exact cup for about a year until I got him these ones since they are the same exact brand and cups that I like. They fit into any standard cup holder and my son is 1 and a half and he can hold it with one hand perfectly fine to drink out of it. The straw on the top of the cup is a soft silicone straw the colors and design on the outside haven’t faded even after being washed in the dishwasher countless times.
  • Great Toddler Cup
    These cups are great! They do not leak, they wash in the dishwasher well, and they come in several different designs and colors that my kids love. They are easy to take on the go and I know they’re not going to spill in my car. They also seem to hold a little more than other sippy cups, so I’m not refilling it all the time and it can last a long grocery trip. It fits in any standard size cup holder. This is my go-to sippy cup!
  • Good quality.
    Good quality, easy to clean, do not leak. Perfect for little ones. Perfect dinosaur color.
  • Best straw cups
    We’ve tried a lot of straw cups. I read reviews and saw other parents recommended this brand. They work great for our 13 month old. The best part about these cups is that there’s 4 parts and it’s easy to clean and reassemble. They aren’t completely leak proof but they do a really good job at being close to it. Time will tell how they hold up but I’ve already repurchased these cups twice because of their functionality. The designs are very cute and I appreciate that the cup and straw is somewhat see through so I can see if my little one is actually drinking. Also, I did a drink test and the straw seems to not be too easy or too difficult to drink liquids through. I wish they had some measurements on the side but other than that 10 out of 10. Definitely recommend getting these.
  • Don't let the cute patterns be the only reason you purchase these cups
    I'd give it a 5☆ review if the patterns held up to the usage, but I knew that when I bought them. The quality is still great. Up until now, I had just purchased the basic, smaller Zak cups from Walmart until I saw how well they would work for my child. My son is 17 months old, and he's been using these cups for several months. They're a great cup for a tiny human that has an understanding of how a straw cup works because there is no weight/flow adjustment. We moved to these when he got tired of Chicco straw cups.
    The green "goose" cup is my son's favorite right now. Unfortunately, you can't tell that there's geese on it. I don't put these cups in the dishwasher, but the patterns still don't survive the daily wear and tear of a toddler. Otherwise, they're a great buy. They don't leak unless you place pressure on the straw itself. So if you're wanting something that your child can throw down, toss around, and pick back up again without a puddle being left in the floor, these are a good option. I'd also like to point out that the straw is silicone, and if your child goes running around and falls, the cup itself may be painful to land on, but their mouth isn't going to get cut up from a plastic straw.
    Cleaning the cup is super easy. The top, and straw are dishwasher safe, and it breaks down easily for cleaning in the sink or a quick rinse. The body of the cup is not dishwasher safe and has to be handwashed if you want to keep a shred of pattern on it, but like I said, daily use and wear eventually start to show. These cups are colorful, easy to clean and they're a good fit for a tiny human who is ready to transition from a weighted straw to a regular straw cup. Even if the patterns don't hold up for very long, I'm happy with the purchase.
  • ????️ Perfect for Little Superheroes – Durable, Fun, and Truly Leak-Proof!
    If you’ve got a toddler who loves Spider-Man and you’re tired of dealing with messy spills, the Zak Designs Marvel Kelso Toddler Cups are an absolute win. These cups are not only adorable and kid-approved, but also incredibly practical for everyday use—whether at home or on the go. We found these to be our best option due to our super active toddler who will throw it from time to time. Previous cups would start leaking over time but not these cups. They have held up to the abuse and still look like they just came out of the package.

    ✅ A Parent’s Dream:

    ???? Truly Leak-Proof:
    We’ve tested a lot of sippy cups over the years, and these are some of the most reliably leak-proof options we’ve found. They don’t drip when tipped, tossed, or even dropped—which makes them ideal for travel, car rides, or playtime chaos.

    ????️ Marvel Design = Instant Hit:
    The Spidey and His Amazing Friends graphics are vibrant, fun, and a huge hit with any superhero-loving toddler. They love picking their own cup and showing it off to friends.

    ???? Built to Last:
    Made from thick, durable plastic, these cups hold up to toddler drops, dishwasher runs, and heavy use. They don’t crack or fade, and the lids fit securely without being impossible to remove for adults.

    ???? Easy to Use & Clean:
    The simple design means no extra valves or hard-to-scrub parts. They’re top-rack dishwasher safe and super easy to take apart and reassemble.

    ???? Great for On-the-Go:
    At 15oz, they’re the perfect size for keeping kids hydrated without being too bulky. They fit well in cup holders and diaper bags.

    ⚠️ A Few Quick Notes:

    Not Spill-Proof When Lid Is Off:
    This seems obvious, but just a reminder—once the lid is off, it’s a regular open cup. But with the lid secured, you’re good to go.

    Handwashing the Graphics May Prolong Life:
    We’ve put ours in the dishwasher plenty of times with no issues, but if you want to preserve the bright Spidey designs long-term, occasional handwashing may help.

    ⭐ Final Rating: 5 / 5

    These Zak Spider-Man sippy cups combine fun and function in the best way possible. They’re durable, leak-proof, easy to clean, and your kid will absolutely love drinking from them. A must-have for any toddler who wants to drink like a superhero!

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