I'm super happy about these Zak water bottles! They are leak proof, with the lid closed, I tested them! They were very easy to clean by hand, but also top rack dishwasher safe. They have good flow when sipping. The button to open the lid is easy for little hands and it has a lock for extra protection. It's also insulated to keep drinks cold for hours. My kids (ages 5-7) loved the Bluey designs! Not only are these reusable bottles well made and sustainable, but also very fun and cute.

The Jurassic Park cups had an amazing design. Loved the color and handle for easy holding. I felt the button to open could be difficult at first findind the right spot to push. Once open the cup several times it gets easier.

Super cute bluey and bingo bottles. It comes in a set of two, they are leak proof and vaccum insulated. It is also top rack dishwasher safe. The design is super super cute as well as it is so colorful. My daughter loved it!

Got these for my 7 yr old. He takes one to school while the other get used at home. Easy suction, easy cleaning. Giving it 4 star because the silicone bottoms don’t stay on. Also because although tightly closed, when the bottle is placed to the side, there is a tiny about of leakage. But neither issue a deal breaker. because

Unfortunately upon opening to wash I noticed there was rust inside of the cup. Very disappointing.

It's great for hot summers, keeps ice frozen in it all day, handles being dropped by my kids constantly and easy for them to push open if it's not locked. Although it's dishwasher safe the design will come off if you put it in there so hand wash, we found that out the hard way. Also if the lid isn't closed and it tips over it will spill everywhere.

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.

I got the Spider-man version of these bottles for my two boys ages 10 and 6. They are nicely made and look cool too. You get two 20 oz bottles which are a good size for older children. They have the flip top which has a small switch to lock it so it doesn’t just pop open on its own. They are also stainless steel which helps to keep their drink colder longer.

Nice quality cups. Gave these to my nephews and they love the designs. These cups have a lock switch on them. You open the cup and then pop open the top to drink. That helps keeps the drinking part clean and helps prevents spills.

Kids loved the cups but Teacher was upset since it leaks and ruined work. These are the 5 set i get and keep leaking. Won't be buying Zak anymore.