Excellent sanitation and heat/cold retention. Mouth piece is covered securely. Love the buckle and button systems to ensure the cap is secured. No leakage when lid is properly secured. Super easy to clean and use. Keeps my warm water warm for at least a whole workday! I’ve only used it for a whole workday, but am sure it keeps the water temp at your desired level for more than 8 hours. Easy to carry and fits all car cup holders from sedans to SUVs.

Stanley won’t stand by their product and cover it under warranty. I’ve purchased six of these water bottles and within four months for tops broke. Stanley sells replacement tops for all of their other products. They do not sell it for this one. All it takes is a very minor nudge for it to tip over and the top cracks and leaks rendering the bottle useless. It’s unfortunate that they’re unwilling to stand by their product or to fix the defect because this water bottle kept ice cold for 16 hours in the hot Florida sun but if the top won’t keep it sealed it doesn’t matter. I will no longer buy any Stanley product because of the massive amount of frustration dealing with their customer service for three months to find out that they would only cover one of the four bottles.

4 stars just because it doesn’t fit my car cupholder. I though it would be a universal fit for cupholders. Other than that the bottle is perfect. Been using for a few weeks only. It keeps the drink cold or hot. No leaks. The lid is plastic but seems sturdy. The handle is comfortable to carry the bottle around. No scratches at all so far.

I already had a Stanley 24 ounce Quick Flip Go Water Bottle in another color. When I saw a yellow one I had to buy it. I use this bottle for my hot beverage every morning. It's the right size (24 oz.) for me and keeps my beverage hot for several hours. The water bottle is also durable. The first one I bought has been dropped with little to no damage sustained, and is still watertight.