Fortunately for our egos and our health, Rhea has recognized just how preventable these slips and falls are. The company applies an advanced form of anti-slip technology to flip-flops and other street shoes. With men's and women's sandals, boots and slip-on flats, Rhea offers a fully patented outsole with a .6 friction coefficient, the highest in the industry. The NEVERSLIP outsole is made from an exclusive rubber compound capable of enduring extreme conditions, while the tread pattern on the bottom of the sole pushes liquid away to provide more sole-to-surface contact. Also, their boots feature water resistant material to both reduce watermarks and keep your feet dry.