As a life long, card-carrying member of the reusable water bottle club, I've gone through and used my share of water bottles: plastic and stainless steel, pop tops and screw tops, wide mouth and slim. I really did not expect to be wowed by this bottle. I don't really care what brand things are as long as they work, so being a Stanley did nothing to assuage my skepticism. But after using this continually for a few weeks I have to say it's the nicest water bottle I own, has been extremely durable, and has surprised me with it's ease of use.
I did not think I would care much about how the body of the bottle can screw apart since I don't actually like super cold water and never use ice. HOWEVER I do live in Texas and don't appreciate my water turning to molten hot lava if I leave it the car for ten minutes, so insulation is an important factor to me in that sense, and this bottle held up nicely, keeping my water at a cool temp. The thing for me that was so nice about having the body of this bottle screw apart was the ease of cleaning. I love a good screw top bottle, but often it begins to taste swampy after awhile because I can't seem to get it clean enough. This one I unscrew, put the three parts in the dishwasher, and never need to think about if a bottle brush will fit through the neck. That brings me to the other thing I love about this bottle: the slim neck and small mouth. Most screw top bottles can't have this petite of a mouth and neck in order to accommodate cleaning, and so they end up having a mouth that is slightly too big and the water sloshes out around your mouth as you drink. This spout has an ergonomic curve that fits your lips as you drink, and it's small enough that I could take a drink while driving down a bumpy road without getting water running down my neck. Miraculous! This little mouth would make filling the bottle a pain if it didn't have the secondary opening. But opening it at the shoulder to fill instead of at the top is a game changer. I took this bottle to a waterpark and filled it at one of those bottle refill stations that activates via sensor. It was so much easier to get the bottle in front of the sensor and aim the water into the vessel at the same time with the wide opening. The only sort of funny thing to happen with this bottle was at said waterpark where an attendant wanted to check it--he thought it was some sort of fancy alcohol bottle. But as soon as he saw the brand he waived me on. Made me chuckle.
Overall, this bottle is great. Neither seam leaks. It's easy to fill. It's a dream to clean. It's a pleasure to drink from. 10/10!
I was given this water bottle to try as part of the Stellar Product Testing Panel.

I was given this water bottle to try as part of the Stellar Product Testing Panel. As a Stay at Home Mom of 2, I could not have been more excited to try a product that would help me to meet my daily hydration goals. After having children, I found myself going from staying constantly hydrated to ending my nights being unable to remember if I had more than a few sips of water throughout the day. The All Day Slim Bottle turned out to be the perfect portable hydration station for my hectic lifestyle!
In the past, I hated lugging around my bulky water bottle so this products’ sleek, slim design proved to be essential. FINALLY I’m able to fit my water in to my diaper bag and/or my car cupholders!
Another huge plus is the capped design vs. the straw feature. The bottle neck shape with removable cap turned out to be very helpful when my children needed a quick refill on their waters while out and about. Typically, I’d have to remove my entire water bottle top and attempt to fill their respective containers, which often led to spills more times than not. However, with this bottle, pouring water is easy peasy! The small opening allows for water to pour smoothly without risk of ice dumping out everywhere.
The only slightly negative thing I have to say about this bottle is the neck portion does tend to sweat.
All in all, I am very happy with this product and would most certainly recommend The All Day Slim Bottle for anyone who needs a practical solution to their hydration needs.

This is a very pretty water bottle. It doesn’t just have beauty, though. It’s very functional, and makes a fantastic water bottle for most needs. The twist off top half makes it very easy to add ice and fill up quickly, and the seal is indeed leakproof. The spout has a nice shape for sipping, preventing spills (easy to do when driving or multitasking with other water bottles!). The three components come apart for easy cleaning, and are dishwasher safe. It is somewhat large (great for staying hydrated and not needing to refill often), but not too large. It just fits in the cup holders in my car, thankfully. Where this water bottle really shines is in its performance - it keeps ice water cold for days! I had left it full of water and ice and checked it two days later, and the water still had a little ice left. I can see this being very handy for weekends outside during the summertime.
The top portion is not insulated, so if the water bottle is on its side (like when tossed into a tote bag), the top portion does start to condensate, which can be messy if thrown into a bag. If it is kept upright, is on its side for only a short time, or does not have loads of ice, it is perfectly fine. It does not leak - that seal does its job! It meets my needs well, for long days at the office, commutes in the car (GREAT for road trips), and evenings at the soccer field. Thank you, Stellar Product Testing Panel, for allowing me to opportunity to test this very well-designed, nice-looking water bottle!

I received this water bottle from the Stellar Product Testing Panel. The bottle ascetically is 5 stars. It looks sleek, the color is very pretty and it seems like it will last a long time. I did not experience any leaks. I always take a water bottle with me when I leave the house so I was excited to try this one because of its size. While the larger size holds plenty of water for a morning or afternoon outing, the functionality of the bottle leaves something to be desired. Because it is large, it does not fit my purse and it barely fit in my diaperbag. It only fits in an extra large cupholder in one of our vehicles, not the average size ones. Only the bottom portion is insulated. The top portion gets very cold if it is filled with ice and the bottle sweats. While my water stayed cool for several hours, the ice did not even last an hour. It also is a little annoying because you have to unscrew the bottom part, fill it with water and ice and then screw the center piece on and fill the rest with water through the small drink opening at the top. Because of the leakproof seal it is hard to screw the cap on and off to take a drink. I also don't feel "slim" is a good title because it is pretty wide to get your hand around if you have small hands. I really think the quality of this bottle is there, just not the functionality.