Alterable cardstock envelopes! These cool side-loading envelopes have a unique closure so it’s easy to tuck in notes, sketches, receipts, ATC’s, business cards and other treasures, yet contents in the envelope stay secure. We chose a sturdy, heavyweight cardstock so you can decorate them with stamps, stickers and more. Use them with our tall plain papers, lined papers, address or calendar pages and dividers for a customized organizer or gift book! Package contains 5 manila cardstock envelopes with holes drilled to fit the binder.