Hydrapak UltraFlask Speed 500 mL Bottle KLC40521 keeping you warm and dry

keeping you warm and dry for longer

Along with traditional suede and canvas uppers

this classic crew sock delivers a smooth ride and medium cushioning

the Boyd 4 cradles the contours of your feet to provide moderate support

• INCREASED DURABILITY - DURACAP™ reinforced materials

Hydrapak UltraFlask Speed 500 mL Bottle KLC40521 keeping you warm and dryPart of our ultra light series, the 500 ml is so light, you might forget you brought it. Weighing in at just over an ounce, its optimal hydration, no matter what kind of runner you are. Its pliable material conforms to most pockets, it shrinks as you drink to minimize water movement and it can be used with or without the tube. Topped with a new feature, the SpeedFill cap, makes aid station refills a breeze. Ultra light weight, ultra useful.