I bought the bottle, a large water bottle with 1000ml content because I wanted for summer bike rides, but which nevertheless fits into a conventional bike bottle holders. This requirement meets the Maxi Corsa. Also by design - simple form and black-matte color - I like it. Sealing it seems to be. The only suggestion would be the mouthpiece: Since it does not have an air intake, you can take only a few sips and then have to take the bottle from the mouth so air can flow. Since there are better solutions, so you can continually drink. But in view of the very good price / performance ratio deserves the bottle definitely 4 stars.
