Quality Park Postage Saving ClearClasp Kraft Envelopes, 9 x 12, Brown Kraft, 100/Box (43568) Inexpensive option. The trusty Clear Clasp closures are extra secure and reusable and Unlike metal clasps, they're Designed specifically to minimize costs at the post Office. Firm paper. Sturdy Kraft paper won't tear or bend during shipping and handling, and the opaque Brown color conceals confidential data. Brown Kraft