100pack 5x7 Corrugated Cardboard Sheets Bulk Pack, designed with strong corrugated construction, each sheets are ideal for protecting items in transit, adding structural support to boxes, or serving as a reliable medium for creative projects. Whether you're shipping photos, documents, or fragile items, these flat cardboard inserts provide reliable protection and help prevent bending and creasing. Their smooth surface and consistent thickness make them easy to cut, fold, and customize to suit your needs.Perfect for home, office, school, and business use.