Material: natural hemp rope. Our grass rope is more thicker than others. Easy to install, no need tools and it may only take you seconds for fixing. Multi-function: Create a stimulating, enriching habitat and play area for your bird to promote agility, improve dexterity and balance Package includes 1pc net + 4pcs round ring and clip hooks. Note: it have natural grass smell but not ador! We will try to drying it before package to avoid grass smell.