This slim charging cable easily packs into purses, backpacks and more, and plugs into any USB port, so you always have the power you need to track your routine. The Fitbit Alta classic band is rain, sweat and shower proof, but not swim proof. Rinse and dry Alta after showering because its best for your skin if the band stays dry and clean. The Fitbit Alta classic band is made of a flexible, durable elastomer material similar to that used in many sports watches, and includes a surgical-grade stainless steel clasp. Size H10.5, W15, D240cm. Weight 140kg.