18 Pcs 6L x 3W x 3D Corrugated Cardboard Box Mailer Packing Mailing Carton Extra-small box shipped flat to save on shipping fees and storage space Extra-small box shipped flat to save on shipping fees and storage space Corrugated mailers are super strong,durable. Perfect for shipping small, lightweight, fragile items Size: 6L x 3W x 3D (inch),Qty:18 Pcs