Brooks Chaser Hat Unisex Apparel OpenSwim is completely waterproof and

OpenSwim is completely waterproof and submersible

redesigned with a super soft brief liner for distraction-free miles

Formulated to closely resemble the electrolytes commonly lost during activity: sodium

in addition to 320 milligrams of sodium and 55 milligrams of potassium to help maintain fluid balance and delay fatigue by replacing electrolytes depleted during exercise

Fully-adjustable hand strap with chafe-free thumb hold enables grip-free running

Brooks Chaser Hat Unisex Apparel OpenSwim is completely waterproof andShield your face from sun and rain so you can run distraction free. Stretch woven fabric is soft and breathable, while a built in headband wicks away sweat. Best For Wicking sweat Sun protection Features Quick drying Breathable Adjustable fit Ponytail hole