This is the best coco coir for a composting toilet, and is perfect for your Nature’s Head. Includes 10 bricks of 250 grams. (5 bricks of 500 grams may be substituted). It comes in easy to store compressed bricks. Please see the video below on how to prep and dump your Nature’s Head for complete instructions on how to use coco coir. Coco coir is an environmentally friendly, renewable product (unlike peat moss, which takes 100 years to grow).