Keeper® 3/8 in x 300 ft marine-grade bungee cord reels are made from the highest quality materials for long-lasting dependability no matter what the application. All Keeper® bungee cords are designed to withstand UV rays and weather damage with durable outer jackets. Premium rubber ensures top quality performance and outstanding toughness. Marine-grade bungee cord reels allow the consumer to choose the length of cord they need.