These envelopes are any binder-lover's best friend! The letter booklet envelopes are excellent at saving space while guaranteeing safety and style. Clip these three hole punch envelopes into any standard binder for ultimate storage and efficacy. With a 1" expansion, sliding in essays, presentations, drawings, pens and pencils is a breeze.Details:Available in multiple colors9.5" x 11.5" each12 countHook and loop closure3-hole punchPliable and sturdy plastic