The 500ml blue Soft Flask Wide is designed with a wider mouth for easier filling and faster consumption of liquids. Its flexible, collapsible material makes it a perfect choice for athletes seeking lightness and practicality in their training. Instructions for use Fill the Soft Flask through its wide mouth, then press for a quick and convenient drink. Perfect for high-intensity activities. Pharmaceutical advice 500ml Soft Flask with wide mouth. Makes filling and drinking fluids easy. Ideal for use in hydration vests.