Clasp Envelopes from Mead are an efficient solution for your office document transportation needs. They re sized to be able to fit a legal or letter sized sheet or a large photograph without folding. These 10 x 13 envelopes are doubly secure because they have an adhesive flap and a folding clasp for closure. They re made from heavyweight kraft paper to hold up to the rigors of shipping. You can also reuse them for filing purposes by not activating the adhesive and only using the clasp to close. These envelopes are ideal for holding manuscripts contracts and other sensitive materials.