Quality Park Postage Saving Clear-Clasp Envelopes, 6 inches x 9 inches, Kraft, 100 Count (43468) Innovative resealable Redi-Tac? technology on the closure replaces the traditional metal clasp for better repeated use and durabaility. Also features deep gumming on flaps for a more secure seal. If mailing, the Clear-Clasp? design eliminates additional USPS handling charges that are required for metal clasp envelopes. SFI? certified green solution.