All the protection of a traditional document sleeve with the added security of the Corner Lock feature. Durable plastic sleeves are sealed on two sides to allow easy access to documents while keeping them looking fresh and sharp. Special Corner Lock fits snugly over the clear front cover to ensure that your documents don't accidentally fall out. Clear front cover aids in quick identification of documents. Durable, yet lightweight and portable; nonstick poly material won't lift print. Sleeves hold up to 20 sheets of 8 1/2 x 11 paper. Number of Sections: 1; Tab Cut: Untabbed; Size: Letter; Punched/Unpunched: Unpunched.