The platypus soft hyperflow cap bottle is the most flexible and reusable water bottle available for sport and recreational use it39s super lightweight and easily packable thanks to the 80 less weight and bulk that it has shed being a soft water bottle the bottle is also made from a taste free and bpa free material which means energy drinks and cordial won39t leave its mark on the bottle and it is easily cleaned this hyperflow cap version is easily drinkable with one hand without h