Terra Ties are plastic-free,100% biodegradable hair ties. Unlike standard hair ties that are made of synthetic rubber and polyester (which can take thousands of years to break down or don't biodegrade at all), Terra Ties are made from natural rubber and organic cotton. In addition to being 100% biodegradable and having packaging made from recycled materials, Terra Ties are softer, thicker, and more durable than standard hair ties.