DIMENSIONS: Large 10" x 13" booklet envelopes perfect for mailing documents without folding, ideal for business or personal correspondence MATERIAL QUALITY: Constructed from heavy 28 lb. white wove paper, providing durability and a professional appearance SECURE CLOSURE: Features a strong gummed flap that creates a reliable seal when moistened for safe document transit and storage DESIGN: Open-side configuration allows easy insertion of materials like catalogs, presentations, photographs, and documents QUANTITY & ORIGIN: Bulk pack of 100 envelopes manufactured in North America to ensure consistent quality and performance