AcuGRIP handles provide targeted relief

Individual need will vary

Heel tab and tongue gusset provide a smooth step-in feel

air mesh and KPU provide comfort and breathability

A runner's last properly fits running shoes

Nathan 14oz Soft Flask with Bite Top Size_09519.5 Narrow (AA) AcuGRIP handles provide targeted reliefStay hydrated during long runs with the Nathan 14oz Soft Flask with Bite Top! This versatile flask offers handheld hydration when you're on the move or slips into any hydration vest or pack. With the bite top, you can control where your liquids go, ensuring you won't lose a single drop. Bite valve keeps liquids from escaping Works great with all Nathan hydration vests Exo Spine construction adds structure and stability. Bite valve features high flow