The Biggie 2.5L Water Bottle (Blue)2. 5L definitely not for the faint hearted. one bottle. done. the Biggie is for the gym girlies, the desk hydrators, the ones who mean business when it comes to water intake. fill it once and you're set for the day. big enough to hold your goals, tough enough to keep up with them. compatible with all Sinclo lids and fully customisable because even the biggest bottle deserves a little personality.