How do I clean and care for my jogging armband case ?

Neoprene

Do not put the sport armband in a washing machine. Hand wash with a small amount of mild detergent if desired, rinse thoroughly in cold water and dry flat or hang dry, out of direct sun. Do not put the armband in a dryer. 

PVC mylar window

Use a mild cleaner or Windex glass cleaner by spraying a little on a paper towel or lint-free cloth and then wiping the window clean.

Sunlight

Direct sun can affect the neoprene material. Never dry or store  armbands in the sunlight.