Make a bold impression with Black Self-Seal Flat Mailers—perfect for shipping photos, documents, and promotional materials. These mailers feature a strong, self-sealing adhesive closure for tamper-evident security and a sleek black exterior for a professional look. Made from durable, rigid material, they prevent bending and damage during transit. Ideal for businesses, creatives, and e-commerce sellers seeking style and protection. Lightweight to help lower shipping costs, these mailers combine functionality with visual appeal. Upgrade your packaging with Black Self-Seal Flat Mailers » for secure, reliable, and elegant shipping every time.