This is a ProCase Universal Waterproof IPX8 Cell Phone Pouch Case 2 Pack.
One of the cases is black and the other is green. They feature 2 flip-out latches at the top that secure the bag closed. These are made of plastic and measure approximately 4" wide and 8.5" tall. They each come with an attachable string lanyard.
These are pre-owned in very good condition in original packaging.