Does not keep cold, not even indoors. Ice melts in hours. But, at least water doesn't leak.

[This review was collected as part of a promotion.] We have a couple kids in sports and do they always need some solid sturdy water bottles and these are perfect. They keep drinks cold to last an entire day! I like having the option in the kids as well. They are very easy to clean out which is of the most importance.

[This review was collected as part of a promotion.] These are great little water bottles. I like that it comes with two options for lids to drink from. I tested them by leaving one in my car (Florida) and one in my house, both with ice in them. They both did well overnight keeping the ice frozen and lasted into the day before it all melted. I think these are a great addition for a water bottles

[This review was collected as part of a promotion.] These are so nice. I love the versatile lids one for chugging and one for straw. Perfect for on the go with my little ones. Packaging is cute and i live the color of the bottle. Great value and works great.

[This review was collected as part of a promotion.] I walk to work everyday and these are perfect for me to carry my water in my backpack. I love that it keeps things cold for 20 hours and that it is spill proof. It also does not have a plastic smell which a lot of these water bottles do. It is a great value and would highly recommend.

[This review was collected as part of a promotion.] I was pleasantly surprised by these water bottles. Firstly, I discovered Zulu offers a lifetime warranty, and registration is simple. I love that my drinks stay cold for up to 20 hours. I love the colors and texture of the exterior of the bottle, and I like that they're leakproof and have a carry loop, which I can attach to my bag. I also like that they're stainless steel instead of aluminum and that they're BPA-free. I would have liked these to come with the third, twist lid (though I do appreciate the two lids they each came with) and to be usable for hot drinks as well, hence only four stars.

[This review was collected as part of a promotion.] I absolutely love these 2 water bottles! The 24oz is much more convenient as it's not too small or too big and these colors are simple but so cute. Water stays cold for so long and the built-in straw is so convenient for easy sips. Washing this bottle is super easy. The water bottle is leak-proof, keeps me hydrated, and is a super cute essential.

[This review was collected as part of a promotion.] I mean wow, so easy to use, easy to carry and easy to clean. All around great cup, the colors are nice and calm and the texture is smooth and feels good carrying around especially with the little handle. Love the options for straw or pour spout

[This review was collected as part of a promotion.] I didn't expect it to be such a great quality tumbler, I'm thrilled! It will last a long time! They have a great design and great quality! Very beautiful color and design! They are very comfortable and roomy! The replacement lids were a joy! They're just perfect! For their quality, they are very cheap! They should cost more! I highly recommend it! They are versatile and will fit both men and women! And they are very productive!

[This review was collected as part of a promotion.] I loove this! The packaging is neat and you can clearly see what you’re getting. The bottle is lightweight and I love being able to swap out the lids per preference. The colors are also gorgeous and perfect for me! Definitely recommend