Slip

"The Slip", the leather pocket notebook cover that's named after a nautical slip. A nautical slip in very simple terms is a designated, safe space for a boat at a dock that has closed off sides. It's closed on two sides and open on the other two sides. It can hold up to two pocket notebooks and some notes/receipts. The Slip will help minimize the wear on your pocket notebooks and is slim enough to fit inside of your pocket without much added bulk.