I really like these tumblers. They keep my water cold and make it easy to hydrate. The quality is good and the colors are beautiful. The reason I didn’t give it 5 stars is because it took almost a month to receive them. They seemed to get lost in the mail and I had to contact customer service to get a new order shipped. It was a long time to wait and no compensation.

The 40 ounce Hyrdaflow mugs are great. It keeps my water cold for hours all night/day. Plus the mug does not sweat on the outside. I have not tried it for hot liquids. But it is suppose to keep things hot too. They sturdy handle is convenient to carry the mug. It is taller than most mugs and it fit in my car's cup holder. However, it will not fit inside my husband sport's car cup holder. I love the mug I have ordered several of them for friends.

I love these cup. I bought the 1st set came while my sister in-law was visiting, she too one home with her. I took my cup to work with me and a couple of my coworkers really like it, so I ordered a second set and gave it as Christmas gifts. I love the size and that it fits in my car cup holders. They look really nice and keep my water cold.

These are very impressive tumblers; the lids are very nice with multiple access, either via the stainless straw, the pop-up lid, or no lid at all! Keeps cold liquids cold for a LONG time…. I haven’t tried this for hot liquids since I normally don’t put hot liquids in a tumbler. I would HIGHLY recommend these tumblers; I got the blue set with one solid blue and one very nice striped pattern.

I try to drink half my body weight in water a day and these two tumblers help accomplish this. I typically drink room temperature water so I can’t speak to the water staying cold or hot. I find the tumblers quite heavy when they are filled. And I often have to use two hands to drink even with the side handle. Also they fit in my front car cup holder but not in the slightly smaller and not as deep back seat cup holder. My biggest disappointment is how challenging it is trying to find items like these sold in the store which are “Made in the USA”.

Love mine so much that I bought them for gifts for my Bible Study group this year as we launched our be healthy goals. DRINK MORE WATER! PROS: Keeps ice for 24 hours - in the house/car, assume less when it gets hot outside. Fits in car cupholder. Love colors. CONS: Silicon straw cracks/tears in the middle. Hard to find a replacement because it has to be so long to get to bottom of cup.

I wanted a larger tumbler than my old one and this is definitely big! It keeps ice frozen overnight, easy to carry and nice color. I like that there's a solid color and a printed one. I don't use the straw or rubber squeeze option so I can't speak on how easy it is to use or clean.

Beautiful well insulated drink tumbler will keep your beverages cold for hours. My only negative is that the lid can be fragile. One of my lids arrived broken even though they were well packaged. Sam's club quickly replaced and they have been excellent for use. I really like the SS straws with the silicone tips.

Bought these cups for a road trip and we were SHOCKED with how long ice lasted. We filled our glasses with ice at lunch and still had same ice throughout the entire next day. Bought another set in different colors and a set for my parents. Highly recommended!

These tumblers are great. 1) they have a locking mechanism so the straw doesn't fall out, 2) they are dishwasher safe, 3) they have a straw for cold drinks and a lid for hot drinks, and 4) they are the largest tumbles I have found that fit in car cup holders.