Case Logic Sport MP3 Armband UMC-1 - Arrm Pack for Digital Player Slimline universal sport armband compatible with stick MP3 players; such as SanDisk Sansa Express and Sony Walkman NWZ-B105 Thin lycra cover and clear screen protector allows song change without removing player 1 hand armband adjustment eliminates fumbling Headphone jack opening at bottom of case Fits devices up to 1 1/4" W x 3 1/4" H x 1/4" D