This is a mix of Coco coir (byproduct of coconut production) and perlite.
This is an environmentally sustainable choice as a potting medium. It's light and airy, it aids in a healthy root development.
It's recommended to fertilise regularly as coco coir is a sterile substrate.
You can use Coco & Perlite on its own or you can mix with soil as a soil adative.