A Instagram ad appeared on my feed and it got my attention because the bottle looked really nice and, what is more important, it said that the liquid inside it will stay cooled up to 24 hours, without any leaks or anything like that. I decided I had to buy it because I drink a lot of water and I HATE water that is not cold, even in winter. Also, buying water while out is super expensive, costing around 1 or 2 euros sometimes; not to mention that all those bottles are pretty bad for the environment. So, I bought a pastel purple bottle of 500ml. I really wanted it to be as effective as described and, I must say that I am really happy with the purchase. The bottle looks exactly the same as the pictures, so no surprise there, and it does keep the water cool all day long, even in 40 degrees, while outside, on the sun. I have one full always on my backpack with ice-cold water and it's perfect. Although it may seem expensive, I do think it's much better in the long run because I won't be expending so much money on bottled water from now on.