Key Features ✔ Perfect Size for Small Products – 4 x 4 x 1.5 inch black mailer boxes are ideal for packaging jewelry, earrings, rings, bracelets, cosmetics, accessories, handmade products, and small gifts. ✔ Premium Black Exterior with Kraft Brown Interior – Elegant black outside finish paired with a natural brown kraft inside creates a professional unboxing experience for customers. ✔ Strong 3-Ply Corrugated Construction – Made from durable corrugated cardboard that provides excellent protection against crushing, bending, and damage during shipping and storage. ✔ Easy Fold & Secure Closure – Self-locking mailer design assembles quickly without tape, making packaging simple and efficient for small businesses and online sellers. ✔ Value Pack of 20 Boxes – Comes in a pack of 20 sturdy black mailer boxes, perfect for e-commerce shipping, gifting, subscription boxes, and branding needs. Upgrade your packaging with the Prockage 3 Ply Black Corrugated Mailer Boxes. Designed in a compact 4 x 4 x 1.5 inch size, these premium black boxes are perfect for shipping and presenting jewelry, accessories, handmade items, cosmetics, and small gifts. Made from durable 3-ply corrugated cardboard, these mailer boxes offer reliable protection during transit while maintaining a clean and professional appearance. The elegant black exterior combined with the natural brown kraft interior creates an attractive unboxing experience that enhances your brand image. The easy-fold self-locking design allows quick assembly without the need for additional tape, making them ideal for small businesses, online sellers, boutiques, and gift packaging. Whether you're shipping products to customers or preparing gifts for special occasions, these sturdy mailer boxes provide both style and protection. Package Includes: 20 Black Corrugated Mailer BoxesSize: 4 x 4 x 1.5 InchesColor: Black Outside, Brown Kraft InsideMaterial: 3-Ply Corrugated Cardboard