GUMMED: Fully gummed flaps provide a secure seal to keep contents secured MULTI:PURPOSE: These 9 x 12 envelopes are perfect for holding documents flat for when folding is undesired VERSATILE: Great for mailing, storage, and organizing in both home and office environments EASE: Envelope opens on the long side for easy insertion and retrieval of contents GREAT VALUE: Conveniently packed in 250 count to reduce the frequency of repurchasing