Two-toned band creates a sporty, stylish look that’s ready for anything; A brighter shade inside the band delivers an extra pop of color that’s both fun and eye-catching;Signature hexagon perforation design delivers breathability and comfort; Aluminum double buckle matches the band so it works with any Ionic watch case and offers added security in any occasion;Tested, endorsed and approved by Fitbit Ambassadors like cycling legend Jens Voigt, ultramarathoner Dean Karnazes and pro-runners Sara and Ryan Hall; Water-resistant band is ready for rain, sweat and swim