Based on this product's specifications, here are some alternatives and similar models
Linotech polypropylene cord 6 mm, 400 m spool, model 2595
Summary description:
Polypropylene cord by Linotech, model 2595, 6 mm diameter on a 400 m spool. Durable, lightweight synthetic cord suitable for general-purpose tying, bundling, garden use, and light outdoor applications. Resistant to moisture and rot typical for polypropylene; easy to handle and wind on a spool for storage and transport.