Precision | Top Tube Flask hardloopvisor They stimulate blood circulation and

They stimulate blood circulation and help reduce fatigue during long runs

optimizing aerodynamics for maximum speed

The extreme rocker geometry ensures a smooth heel-to-toe stride

more efficient swimming experience

Precision | Top Tube Flask hardloopvisor They stimulate blood circulation andPrecision Fuel & Hydration Top Tube Flask Aerodynamic Carbohydrate Transport for Triathlon & Cycling The PF&H Top Tube Flask is designed for athletes who want to carry large amounts of carbohydrates efficiently, cleanly and aero during long rides. In collaboration with Profile Design a leader in aerodynamic cycling components for nearly 40 years this flask offers a super slim, strategic way to carry PF 300 Flow Gel or other liquid nutrition.