Product Description
You know the drill — mid-ride, you're trying to tear open your fifth gel packet with your teeth, sticky fingers everywhere, empty wrappers flapping off your bike. And somehow you've lost count of how many carbs you've actually taken in. Here's what most athletes don't realize: your bottle can carry your entire race fuel supply and track your intake for you — if it's built for the job.
The PF&H Flow Bottles and Flasks are the only vessels purpose-engineered to pair with pourable gel, letting you load up to 300 grams of carbohydrates into a single container and sip your fuel on demand — no tearing, no mess, no counting wrappers.
300g of Carbs. One Container. Zero Math. The Flow Bottle 300 and Flow Flask 300 each hold an entire pouch of PF&H Flow Gel — that's 300 grams of carbohydrates ready to go before your race even starts. For athletes targeting 60-90g of carbs per hour, that's three-plus hours of fuel in one place.
Engineered for Actual Flow PF&H tested every bottle and flask on the market before building these. The result is a vessel that dispenses thick gel effortlessly — no white-knuckle squeezing, no gel stubbornly stuck at the bottom when you need it most.
Three Sizes, Every Race Distance The Flow Flask 120 holds 120g of carbs and slips perfectly into a jersey pocket or running vest for shorter training sessions and sprint-distance events. Step up to either 300ml option for long rides, marathons, or full-distance triathlon.
The science on carbohydrate fueling is clear: hitting 60-90 grams of carbs per hour during sustained effort is the difference between finishing strong and running on empty. The challenge has always been the delivery system — carrying that volume of fuel without the chaos of individual packets. The Flow Bottles pair with Flow Gel's specially engineered thinner consistency to let you sip a controlled, steady stream of fuel without stopping or fumbling. You always know exactly how much you've consumed because you can see it.
Load it up: Pour one full pouch of PF&H Flow Gel into your Flow Bottle 300 or Flow Flask 300 before your race — 300g of carbs, ready to go, in 10 seconds.
Sip on schedule: Pull from the bottle every 15-20 minutes during your effort to stay on top of your hourly carb targets without mental math.
Pro tip: Run the Flow Flask 120 in your vest or jersey pocket for sessions under 90 minutes, and anchor the Flow Bottle 300 in your bike cage for long-course racing — they're built to work as a system.
IRONMAN champions including Emma Pallant-Browne and 16x IRONMAN 70.3 Champion Sam Appleton have called Precision Fuel & Hydration their secret weapon — and the Flow system is how they execute precision fueling on race day without distraction.
Stop counting wrappers and start hitting your numbers. Your carb strategy deserves a delivery system that actually works.
For gear that arrives damaged or falls under the manufacturer's warranty: Please send a photo of the damage or error message to hello@thefeed.com. We will either help process a claim for the product and a replacement product or store credit will be provided, or we will direct you towards the correct place to make a warranty claim for the product. For returns on gear that you have used, we follow the manufacturer's instructions for satisfaction guarantees. This is specific to each gear product, terms and conditions may change.
PF&H Flow Bottle & Flask FAQ's
Everything you need to know before getting started.
All three are designed to carry PF&H Flow Gel, but they serve different purposes. The Flow Flask 120 holds 120g of carbs and is built for shorter efforts and training sessions. Both the Flow Flask 300 and Flow Bottle 300 hold 300g of carbs (a full pouch of Flow Gel) — the Flask is a soft, collapsible option while the Bottle is a rigid, standard cage-compatible design.
These are specifically engineered to work with PF&H Flow Gel, which has been reformulated with a thinner, more pourable consistency than standard gel. Traditional gel packets are too thick to flow properly through these bottles — pairing them with Flow Gel is the whole system.
Use the Flow Flask 120 for runs and training sessions under 90 minutes, or as a secondary pocket flask on longer efforts. Go with either 300ml option for half-iron and full-iron distance racing, long rides, and marathons. The Flow Bottle 300 fits standard bike cages; the Flow Flask 300 is ideal for vest pockets or behind-the-saddle mounts.
Yes — the wide mouth opening on both the Bottle and Flask makes them straightforward to rinse and wash after use. A bottle brush handles any residual gel quickly.