E-volve Fast Forward Sports Armband for MP3 players & phones in size: M / color: Black/Silver / compatible with (Sony Walkman NWZ-E455 NWZ-E454 / NWZ-E453 NWZE453 E Series NWZ-E463 NWZ-E464 E464 / E series NWZ-E430) To fit MP3 players / phones up to 100 mm x 50 mm x 12 mm Velcro strip with 3 settings to fit all sizes of arm (22 cm - 40 cm) Simply styled headphone cord wrap takes up slack Credit card pouch 2 earphone ports (bottom left and right) to accommodate any device