I bought the shares (20% for sports bottles / shakers), choosing this option in blue. The black bottle is different from the rest by extra-preservation temperatures. Otherwise, like the other 750ml variants: a screw-on drinking cap, connected to the bottle by means of a hinge-holder, a screwed main cover with a strainer under it. The bottle without liquid is rather heavy, but even with filling, a strong hinge-holder holds the weight perfectly. In summer we mainly need to take cold drinks with us on trips and walks - this bottle perfectly keeps the temperature for at least 4-5 hours. In addition, sometimes you want to take a mineral water, but usually even without gas in other bottles there was a pimping - water under the pressure of the gas somewhere still infiltrated outward anyway. With this bottle there is no such problem! And this I'm not talking about the general flow of liquid - completely absent, despite the position of the bottle. Despite not the small size, it is convenient to keep the bottle with one hand, it is convenient to drink even in motion, although you first need to unscrew the "nose", but (in combination with the dimensions) are fading minuses in comparison with its indisputable pluses. Definitely a good buy! Off: shpping-weight options with 500ml for some reason higher than 750ml.
