With a breathable sport design and secure double-buckle, these two-toned sport accessory bands for Fitbit Ionic are both sporty and stylish. Fitbit Ionic is swimproof, meaning its water resistant to 50 meters. After swimming or getting the band wet, we recommend drying the band because, as with any wearable device, its best for your skin if the band is clean and dry. The fitbit ionic sport band is made of a flexible, durable elastomer material similar to that used in many sports watches, and includes an aluminum buckle. Physical specification Size: large. Strap size L206, . Strap can be removed and replaced. Features Water resistant. Swimproof. Dust resistant.