First introduced in the 1970s, earth shoes are unconventionally designed shoes that feature negative heels. This negative-heel technology was the brainchild of Anne Kalso, a Danish yoga instructor. According to the makers of earth shoes, they promote good health and serve to provide a natural alignment to the body.

Earth, the company responsible for designing the original earth shoes, was absent from the shoe market for quite some time following its initial popularity. In recent years, the company has resurfaced, introducing many new styles and designs for both men and women. There is a wide variety of earth shoes available, including sandals, boots, sneakers, and casual wear shoes. Earth shoes are even available in vegan styles, featuring an array of designs made without animal products.

The negative heel technology unique to earth shoes involves a heel that slopes, positioning the wearer’s heels below his or her toes. According to the makers of earth shoes, this positioning is designed to feel as natural as treading in the sand. Earth shoes are said to provide for the optimal alignment of the wearer’s spine and pelvis, encouraging the shoulders to roll back. As such, earth shoes are credited with improving the wearer’s posture. Earth shoes may even help to relieve back and foot pain, allowing for improved breathing as well.

If you are interested in burning a few extra calories, earth shoes may actually help. The incline of these shoes requires the muscles to work as if you were walking up a hill. As such, you can burn extra calories just by walking around in Earth brand shoes. Keep in mind, however, that this leg workout may lead to some initial leg discomfort if you are not used to working your muscles in this way. You may find it more comfortable to wear your new shoes for a couple of hours at a time at first, gradually moving up to wearing them all day.

To provide for added comfort, all of today’s earth shoes are designed with Gelron2000®. Placed in the insoles, Gelron2000® is material designed to absorb shock to the body as the wearer moves about. This high-performance material is also designed to mold to the foot over time, allowing earth shoes to become more comfortable after they’ve been worn for a time.

The Earth company doesn’t neglect arches with its shoe designs. All earth shoes feature layers of padding to support the arches and cushion the feet. The company asserts that its arch supports are built for longevity, never wearing out.