Quick Take: The Speck Products SkinTight Armband keeps your Apple iPod Nanosnug with a plastic holder and a Velcro strap that's comfortable even during a sweaty workout. Speck also sells a slightly higher-priced version that includes a rubberized case for your Nano; we'd recommend that version, instead, since the Nano is notoriously scratch-prone. For a more colorful workout than this or the DLO Action Jacket provides, go with Apple's own Nano armbands, which are available in five different colors.