5/16" x 30 Ft (10 yards) White Premium Marine Grade Bungee Shock Stretch Cord UV Resistance Heavy Duty for boat Kayak 30' (NOT for face cover making, NO Spool) - Walmart.com
front roll return stretch cord kit, bungee style complete kit
Golberg Black Shock Cord, Bungee Cord - (5/16 Inch x 25 Feet) - Amazon.com
Bulk-Strap Bungee Cord Roll,5/16",100 ft. L NL1008 - Walmart.com
5/16" x 100' Black Shock Bungee Rubber Rope Stretch Cord - Woven Jacketed - Other Products - Amazon.com