The HydraPak UltraFlask Speed 500ml is a lightweight soft flask shaped to sit securely in running vest pockets. Its wider profile and structured base keep it stable, and the SpeedFill cap makes refills fast.
A flask that stays put in a vest pocket makes long runs more comfortable. This one is stable, quick to fill and easy to drink from.
Trail runners and racers using a hydration vest. Pack a pair for a long run along the Monarch Crest.
