400 ft 5/16" MEDIUM BUBBLE WRAP 12" wide, perforated every 12", 400 total sq ft Bubble wrap rolls are perforated every 12" for easy tear-off convenience Durabubble brand is made from 100% virgin resin for maximum quality. It is made with 100% recycleable materials Medium bubble wrap is ideal for protecting heavier, less fragile items Product has bubble size of approximately 5/16" thick and 1" wide bubbles Ships via UPS ground service as 4 rolls of 100 feet in 2 packages