Joint Zone open parachute bags are made from EVA/PVC copolymer-coated polyester fabric. The material is high-strength, heavy-duty, flexible, lightweight, resistant to many chemicals, and highly UV resistant.
The fabric has a tensile strength of 8,000 N/5 cm, or 1,798 lbs/5 cm, and puncture resistance of 2,150 Newtons, or 483 pounds-force.