18" x 2000' Packing Foam are shock absorbing, lightweight polyethylene foam rolls that protect delicate items for shipping and storage. 18" x 2000' Perforated Foam Rolls are perfect for padding cartons, wrapping items, or inserting between delicate objects. The large Foam Rolls are embedded with air cells that form an extra margin of safety and a non-corrosive, non-abrasive, tear and puncture resistant barrier. Cross perforated every 12" for easy tear.