Nathan | Pinnacle Insulated Soft Flask | 18oz | Indigo/Reflective Silver fair isle the Saucony Endorphin Trainer is

the Saucony Endorphin Trainer is built to deliver elite-level performance and comfort

or layered under a coat for cooler weather

PU laminate coating - water repellant/breathable+DWR

The breathable Merino Sport 150 liner offers natural thermoregulation

Nathan | Pinnacle Insulated Soft Flask | 18oz | Indigo/Reflective Silver fair isle the Saucony Endorphin Trainer isMORE COLORS The Pinnacle Soft Flask Insulated 18oz Handheld is built for runners, hikers, and outdoor athletes who need effortless hydration on the go. Featuring Nathan's advanced Exo Draw soft flask technology, this handheld system provides a comfortable, grip free experience, allowing you to focus on your performance. Designed for longer lasting refreshment, the insulated 18oz soft flask keeps fluids cooler for extended periods, making it perfect