IDL Packaging Small Corrugated Shipping Boxes 7"L x 5”W x 3"H (Pack of 5) - Quality Choice of Sturdy Packing Boxes for USPS, UPS, FedEx Shipping - Walmart.com
Priority Mail Shoe Box | USPS.com
Priority Mail Shoe Box 7 1/2" x 5 1/8" x 14 3/8" – Stamps.com Supplies Store