A textile and synthetic upper gives comfortable support. Nike's tallest Air unit to date, the 720 Air unit runs the length of the outsole. Colors take inspiration from the natural world, a counterpoint to the shoe's futuristic look. Molded lines in the upper appear to radiate out from the sides, creating a wavelike design. Rubber coverage on the outsole gives durable traction. Translucent rubber on the heel highlights the Air unit.