I know the Brita system name. This bottle is a discovery. At first glance, its design and its light I like. It is well in hand and disassembly / cleaning is easy. It is therefore possible to drink with this bottle 2 ways: either the neck or the straw. Whether one way or another, his first fault is that it is necessary to aspire to have any strong sip, which is not super discreet. I tried to use coal but without the water filter does not come out much more and it is jerky. When you buy a bottle of mineral water with a sports cap, simply squeeze the bottle so that the water flows without touching the lips if you do not want this contact. With this Brita bottle, it is impossible. We must therefore take the "pacifier" between the lips and suck. Aspiration should be even stronger if you use straw, head straight. The filter provides no taste, even early in the installation and it neutralizes very well the chlorine taste of tap. This bottle is nice at first glance, the idea is good, but the use is not really nice and convenient because of its low flow. To this you add the price of replacement cartridges ... Brita recommends a change in optimum cartridge every week but the filter is effective for consumption by 20 L. So if you drink between 1L and 1L5 day, you can take 15 days.