Leitz Cosy A4 velvet grey lever arch soft-touch file binder. This file has a spine of 50mm making it able to hold up to 350 sheets of 80gsm A4 paper. The Leitz 1015 A4 grey lever arch file binder features a unique, patented filing mechanism that opens 180° for easy use and is made of PP with PE laminated paper inside. The PP film ensures that the binder is more resistant to moisture and dirt.