
Vintage Thank You Letter Set Kraft Specialty Paper Wax Seal Envelopes Kit with Invitations, Postcards & Greeting Cards. US Standard Size: Strictly follows #6 3/4 American standard specifications for compatibility. 12 Vibrant Colors: Offers 12 bright and assorted color options for diverse aesthetic needs. Premium Thick Paper: Made of durable, thickened paper with excellent stiffness and anti-wrinkle performance. Moisture-Activated Seal: Features water-activated adhesive for secure, tamper-evident sealing. Customizable Design: Supports full customization from samples and designs for unique requirements. Printable Surface: Smooth matte surface supports handwriting, inkjet, and laser printing. Secure Confidentiality: Firm adhesive closure protects documents and ensures content safety. OEM/ODM Services: Factory direct supply with available OEM and ODM customization options.