I've been through a lot of water bottles that I stop using pretty quickly. They don't keep temperature at all, and I get bored of the flavor of room temperature water too quickly. I figured it was time for a real water bottle that can keep my drinks cold and refreshing. I was skeptical when I found this product, because it's such an affordable price, but I bought it based on reviews. I'm so glad I did, because I finally found the only water bottle I'll ever need.Unlike most drinkware brands, this one actually DOES keep drinks cold, and for a long time, too! I'm a delivery driver, and kept it in my car with me this summer while working. Even after 10 hours of sitting in my car in the hot sun, my drink would still be just about as ice cold as when I'd left the house! The bottle itself would get pretty hot, and yet the drink inside still had ice and everything. I couldn't believe how well this thing works!I know there are some complaints about leaking in some reviews. I haven't experienced any leaks. I never have to screw the cap on tightly at all, and it seals great. If the bottle is lying down on my seat, I do notice there will be a little condensation around the closed spout on the lid, but it has never leaked. I think keeping this bottle just for cold drinks will help it last longer and prevent any issues (but if you like hot drinks, there are so many colors to choose from, why not buy one color for cold and one for hot?) Also, since it can get pretty heavy when filled, I try to avoid using the carrying handle. I suspect the strain of using it might weaken the seal inside the cap. It also seems like it might break over time if used too much. I would recommend buying a carrying strap instead to best protect your nice bottle.My sticker didn't adhere to the bottle at first, and kept trying to peel off, but once I left my bottle in the hot sun, the sticker stayed permanently. So if you have any issues decorating your bottle, just warm it up in the sun, first!I love the two straws, so you can swap them out for easy cleaning, and it even came with a straw brush! I'm so glad it came with the extra goodies, it makes it so easy to swap out for a fresh straw (especially at a time where we should be very cautious of germs). The mouthpiece is a hard plastic, but covered in a rubbery coating, so you won't bust your teeth on it, which is a cool detail. The flip-top straw works really well and has never given me issues, unlike past water bottles.This one fits inside the big cupholder of my Mustang, but it doesn't fit in my Mazda's cupholders. But with a large water bottle, it's gotta be expected. Like I said, I've never had any issues with it leaking while lying in the seat all day.