· Perfect for mailing catalogs, magazines, projects, or multiple documents at once.· Professional and secure mailing envelopes constructed with thick 28lb. white wove paper.· Easy to secure peel and seal closure has no need for licking or moistening and will stay sealed without tape or glue.· Save time by quickly stuffing multiple pieces of business mail in the 10” wide envelope opening that supports multiple documents thanks to the center seam design.· Green First Class markings show the importance of these envelopes to your mail carrier.