Made from the most durable natural fiber on the planet, this classic hemp sandal is both lightweight and rugged. You will feel down to Earth and well taken care of whether you wear them for work, play or travel. Don't worry, they will last longer than you think and the more they wear in, the more you will fall in love with them. Before the industrial revolution, hemp (http://en.wikipedia.org/wiki/Hemp) was a popular fiber because of its strength and relatively quick harvest. Also, hemp is environmentally friendly; It produces roughly 10% more fiber than cotton or flax when grown on the same land and can be grown with no chemical fertilizers, herbicides or pesticides. Rainbow Sandals are created by hand using specially formulated glue to keep the layers together and the straps in place (no more broken sandals littering our beaches). The founder, Jay Longley, personally formulated the various densities of sponge rubber "memory" to mold each individuals feet, making Rainbow Sandals the most conformable sandal you can find. Rainbow Sandals have grown through word of mouth over several years. Today they are the most popular sandal on the planet.