10mm (13/32" x 300') Bulk Heavy Duty Bungee Spool– original Bungee Co
1/2 inch Black Polyester Bungee/Shock Cord - 100 Foot Spool | Marine Grade - High UV and Abrasion Resistance - Amazon.com
1/2" x 10 Ft Black Premium Marine Grade Bungee Shock Stretch Cord UV Resistance Heavy Duty for boat Kayak 10'(NOT for face cover making, NO Spool) - Walmart.com