12x9x4 Black Small Shipping Boxes, Pack of 20

Key features

• Correct 12x9x4 Size: Pack includes 20 black tuck top mailer boxes. The listed 12x9x4 inch size refers to the outer dimensions. Inner size is about 11.6x8.9x3.9 inches, slightly smaller due to cardboard thickness and folding. This larger rectangular mailer box works well for folded apparel, T shirts, hats, books, journals, candle sets, skincare kits, craft supplies, boutique products, handmade bundles, kids shoes, sandals, flats, slippers, and gift packaging.
• 32 ECT Corrugated Cardboard: Made from 1.5 mm thick 32 ECT corrugated cardboard, these small shipping boxes are lightweight yet sturdy for everyday mailing, small package shipping, retail packing, and light storage. The walls help keep lightweight items organized when used with tissue paper, packing paper, bubble wrap, or other void fill.
• Easy Assembly and No Tape Needed: These 12x9x4 black mailer boxes ship flat to save storage space and fold quickly when ready to pack. The tuck top design allows the box to close without standard packing tape, making daily packing faster and cleaner. Simply fold the side panels, place your items inside with proper padding, and tuck the lid into place for a neat presentation. For heavier items or long-distance shipping, extra tape may be added if desired.
• Premium Black Finish for Retail Packaging: The black finish gives each package a clean, modern look for boutique orders, candles, hats, books, accessories, handmade bundles, and small business packaging. It pairs well with labels, stickers, ribbon, tissue paper, thank you cards, and product inserts, helping create a neat unboxing style without complicated decoration.
• Versatile for Small Business and Home Use: Use these 35 pack shipping boxes for ecommerce orders, mailing boxes, gift packaging, storage cartons, craft fairs, retail packing, moving supplies, and carrier drop offs where the size fits. Ideal for lightweight products and multi item sets.

Make daily packing look cleaner and easier with YIDOMTO black mailer boxes. Each pack includes 20 tuck top mailer boxes in 12x9x4 inch outer size, designed for small business packaging, ecommerce orders, boutique products, gift packaging, mailing, storage, craft fairs, and handmade goods. These black shipping boxes ship flat to help save storage space and fold quickly when you are ready to pack. The tuck top mailer design closes neatly without standard packing tape, giving your package a clean presentation for retail orders, customer shipments, and gift sets. For heavier items or long distance shipping, extra tape may be added if desired. Size note: The listed 12x9x4 inch size refers to the outer dimensions. Inner usable space is about 11.6x8.9x3.9 inches, slightly smaller due to cardboard thickness and folding. Please measure your product and leave enough room for tissue paper, kraft paper, bubble wrap, or other protective fill before choosing the size. This larger rectangular mailer box works well for folded apparel, T shirts, hats, books, journals, document sets, candle sets, skincare kits, cosmetics, craft supplies, accessories, boutique products, handmade bundles, and multi it

Free shipping included. 30-day hassle-free returns.