Alterable cardstock envelopes! These cool side-loading envelopes have a unique closure so its easy to tuck in notes, sketches, receipts, 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 small 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. Each sheet measures 5 3/4"x3 1/4".