Key Features:These bottles have been extensively tested by milKit to ensure they can withstand repeated pressurisation without any kind of distortion,A specially reinforced bottom prevents the bulging that can effect other bottles when at high pressure,The milKit booster is a modular system that allows you to use larger bottles for home use or stubborn tyres and smaller, more portable bottles for enhanced portability and easier to mount tyres,Taste-free hygienic coating for safe drinking,Whilst these bottles are Dishwasher safe, doing so will greatly reduce the life of the graphics,Includes standard screw cap for drinking use.