Extra heavy-duty 32-lb. brown Kraft envelopes protect important items such as artwork, legal documents, reports and more. Envelopes are reusable, and the long-life metal clasp and reinforced eyelet can withstand repeated use. Recycled paper contains 20% postconsumer fibers. Wide seams provide added strength. Envelopes have fully gummed seal flaps and come in convenient sizes for most applications.