Coco coir has excellent water holding capacity while still promoting good drainage and aeration. It's thus giving more moisture to the soil as if it was regularly watered. Air pruning capability results in healthier roots being able to provide more nutrients to the plant. When the plant roots reach the pot's edge its root tips are trapped by the porous fiber. When these root tips meet the air, they are naturally pruned. This pruning process forces lateral branching of roots and increases overall root mass throughout the media. Coco fiber allows air to penetrate the sides of the container, keeping it cool when exposed to direct sun on hot summer days through the process of evaporative cooling.