Earth - Agatha - Vegan (Black Microfiber) - Women's: The "Agatha - Vegan" is a low boot that demands attention! It's stylish nylon mesh uppers and contrasting stitching and laces ensure you'll be noticed. Comfort is ensured by the soft nylon tricot lining and ergonomic padded footbed. Natural latex rubber outsole for shock absorption as you walk. Vegan Society(tm) certified. Earth(R) features unique Negative Heel(R) Technology, which is the product of years or research by a celebrated Danish Yoga teacher, Anne Kalso(R). Anne Kalso discovered that positioning the heels below the toes naturally aligns the body, just like the Yoga Mountain pose. This natural posture and alignment relieves fatigue for people who are on their feet all day.