Core Headband Size:One Size while the loose fit gives

while the loose fit gives you plenty of room to move

molded hand compartment provides a more natural fit for increased comfort

"Just Do It

UP TO 16 DAYS OF BATTERY LIFE IN SMARTWATCH MODE

and biceps

Core Headband Size:One Size while the loose fit givesA sporty fit headband that's perfect for cold weather runs. The soft brushed lining locks in warmth around your ears. Weight: 13g Brushed lining for warmth and comfort Designed to cover the ears Run ready fit that's made to stay put Laser cut reflective logo Made with quick drying fabric Subtle and easy to style Ideal for use in temperatures between 0C and 10C Ergonomic fit for all head sizes