Quality Park,Clasp Envelopes,Gummed,White Wove,9x12,100 per box (38390) DOUBLE SEAL DESIGN -double prong metal clasps with reinforced eyelets and heavily gummed flaps ensure the envelope stays closed and durability SECURE: Clasp closure plus gummed closure for reliability, security and ease of mind that your contents will securely stay closed in the envelope REUSABLE-Great value, each box comes with 100 9x12 clasp envelopes that can be reused multiple times for a bargain PROFESSIONAL FINISH: Bright White paper makes for a fresh, clean appearance perfect for any use. MULTI-PURPOSE: Use these white envelopes as office envelopes, interoffice envelopes, storage of documents, etc.