The design of the cup is good and the graphics are really nice and colorful. There is not any grip material on it that would have been a nice addition, to prevent from dropping it easily. Nothing special or different about it than any other cup but it is an awesome cup for the little ones that love Bluey.

The Zak Designs 20 oz stainless steel double wall kids straw bottle is the perfect back to school water bottle. The double wall design makes these bottles extra tough and keeps the water cool all day long during school. The 20 oz size is nice so the kids don't run out of water. There is a lock on the lid as well! My kids love them and since it is a 2-pack there is minimal fighting over the bottles! My kids chose the Hello Kitty design and we like the fact that they have 2 different patterns on them so we can tell them apart.

Nice bottles but one of them the top leaks. This happened from the first use so we can't use one of them anymore.

They are good bottles, keep the water cold. However, what is the purpose of the bottom strap thingy? The kids lose it, then the water bottle looks weird! I would not buy again, only because of that strap thingy.

Wow, wow, wow! These stainless steel water bottle set is the real deal. My son is in love with the Spider-Man one. Super easy to clean up and it even has a carry handle on it making easy for my son to grab. Love that it has a lock feature to prevent it from opening accidentally and spilling water everywhere. Definitely recommend.

Zak! design stainless steel water bottle pack is great for children of all ages. First, the bottles are much larger than most of the children’s bottles - 20 oz. It’s especially helpful for older kids and for hot days. Second, the bottles keep water cold all day. We went to a rather hot day at a fair (85 + F), and the water was still crisp and cool after several hours in the sun. Third, the handle is very useful for carrying the bottle around as well as a locking mechanism on the lid that makes it spill proof. Overall, these bottles are very well designed to provide all day hydration and have cool designs that kids like.

These Zak cups are SO cute and sturdy. They’re going to be great for my daughter for school and traveling. The lid is great, it can be easily locked and unlocked so that there’s no spills at all. It definitely keeps drinks cold for a while! The fact that it’s a straw system too is something my daughter loves. I would definitely recommend these. We got the Hello Kitty designs and they’re adorable!

These are really great cups!! First of all they are just super cute for kids. The colors are vibrant and the material is very durable. The lid has a little lock mechanism that will help with spills. I can see my grandkids using these for a long time and feel confident that these will hold up to the numerous drops, rolls and throws the boys will put them though. In addition, the Sonic design is their favorite!!

The paint eventually starts to wear off, but long before any of the pieces need to be replaced. The spout and seal are difficult to remove for cleaning. The silicone (?) ring on the bottom, presumably meant to make setting the bottle down less noisy, falls off and gets lost. They do leak if not kept upright or the seals not seated properly. Otherwise, very good, long lasting water bottles that keep cool, however I will be reluctant to buy similar zak bottles again due to the paint looking just awful after long term use. The cups are going strong but look so trashy. Also, the paint does not appear to be covered by the warranty.

My son loves these water bottles. He is a big fan of sonic so we ordered him sonic bottles. They are so well made and easy to carry around. They have kept the water cold for a while even in this hot summer heat. The lock on the top really help keeping his backpack dry so it does not accidentally open in his bag.