Precision Fuel & Hydration Flow Flask 300 – Simplify Your Race Fueling

The Precision Fuel & Hydration Flow Flask 300 is the ultimate solution for endurance athletes who want to simplify their nutrition strategy and confidently hit their carbohydrate targets during long races and training sessions.

Specifically designed to pair with PF&H Flow Gel, the Flow Flask 300 holds an entire pouch of Flow Gel—up to 300g of carbohydrate in a single flask—making it easier than ever to carry and consume high-carb nutrition without juggling multiple gel packets.

After extensive testing, Precision Fuel & Hydration selected a flask with one of the fastest-flowing bite valves available, allowing thick carbohydrate gels to flow smoothly with minimal effort. The soft bite valve is comfortable on your teeth and makes fueling quick and efficient, even during high-intensity efforts.

A unique graduated carbohydrate scale marked in 60g increments from 60g to 300g lets you accurately monitor your carbohydrate intake throughout your run or race. Whether you're targeting 60g, 90g, or over 120g of carbs per hour, the Flow Flask helps you stay on track without second-guessing your fueling.

Like all premium soft flasks, the Flow Flask compresses as you drink, reducing sloshing and freeing up space inside your running vest. It also includes fill lines for mixing drinks when required and is constructed from BPA- and PVC-free TPU, ensuring your nutrition tastes exactly as intended.

Whether you're racing an ultra marathon, marathon, triathlon, gravel event, or tackling a long training adventure, the Flow Flask 300 is designed to make high-carb fueling simpler, cleaner, and more efficient.

Key Features

• Holds a full pouch of PF&H Flow Gel (300g carbohydrate)
• Lightweight design weighing just 29g
• Fast-flow bite valve optimised for thicker gels
• Comfortable bite valve that's gentle on your teeth
• Graduated carbohydrate scale from 60g–300g
• Tracks carbohydrate intake in easy 60g increments
• Shrinks as you drink to reduce sloshing
• Fill marks for mixing hydration products
• Compresses for compact storage when empty
• BPA & PVC free TPU construction
• Capacity: 500ml (16oz)