PREMIUM MATERIAL: These 4x4x1 boxes are made of recyclable corrugated cardboard, which is lightweight but sturdy. EASY TO ASSEMBLE: The 4x4x1 shipping box can be folded in seconds without tape, glue, or staples. Greatly improve packing speed. Perfect for small business. CRUSH-PROOF: Hardened ECT-32 grade box mailer is a little thin but more reliable and crush-resistant than traditional carton. Make shipping your products much safety! ELEGANT APPEARANCE: If you want to DIY your own cute mailing box for small business, the plain white color will make it much easier than regular kraft or bare cardboard. No printings on the white literature box, you are able to create a unique box with your brand, labels, ribbons, stickers and stamps. WIDE USAGE: 4x4x1 inches white box is perfect for shipping, mailing, packaging and gift giving small craft, jewelry, rings, earrings, bracelets and necklaces etc. It also can be used as subscription empty box, retail box, delivery box. PREMIUM MATERIAL: These small flat boxes are made of recyclable corrugated cardboard, which is lightweight but sturdy. EASY TO ASSEMBLE: The white mailing box can be folded in seconds without tape, glue, or staples. Greatly improve packing speed. Perfect for small business. CRUSH-PROOF: Hardened ECT-32 grade box mailer is a little thin but more reliable and crush-resistant than traditional carton. Make shipping your products much safety! ELEGANT APPEARANCE: If you want to DIY your own cute packaging box for small business, the plain white color will make it much easier than regular kraft or bare cardboard. No printings on the white literature box, you are able to create a unique box with your brand, labels, ribbons, stickers and stamps. WIDE USAGE: 4x4x1 inches box is perfect for shipping, mailing, packaging and gift giving small craft, jewelry, rings, earrings, bracelets and necklaces etc. It also can be used as subscription empty box, retail box, delivery box.