Amazon.com: Tune Belt Armband for iPod Nano 4th Generation (fits iPod Nano 4G) : Electronics
Best Buy: Griffin Technology Aerosport Arm Band for 4th-Generation Apple® iPod® nano Clear 10038-NAEROB
MP3 Armband, fit for Apple Ipod Nano 4th 5th Gen or other mp3 player Jogging/Gym Armband with Dual Arm Size Slots&Key Pocket|MP3/MP4 Bags & Cases| - AliExpress
Computers & Electronics :: Audio & Home Theatre :: MP3/MP4 Players :: MP3/MP4 Player Accessories :: Belkin Sport Armband Plus, Fast Fit, iPod nano (4th Gen)
Best Buy: DLO ActionWrap Arm Band Case for 4th-Generation Apple® iPod® nano Black DLA64021/17
Review: Apple iPod nano Fourth-Generation (4GB/8GB/16GB) - iLounge
Sport Armband | iPod nano (5th generation) - AB75 | Tune Belt
Amazon.com: iClear iPod nano 4th Gen. Case w/Armband : Electronics
Apple iPod nano Armband for 4th Generation iPod nano iPhone 5, iPad 3 Accessories, iPad 3, Accessories iPod Accessories, iPhone Accessories and iPad Accessories
Amazon.com: Tune Belt Armband for iPod Nano 4th and 5th Generation - for use with or Without Nike+ Receiver : Electronics
Glow In The Dark Clear Acrylic Hard Case for 4th Generation iPod Nano 4G (Pink) - Newegg.com