The Nike Flex Trainer 9 is a lightweight trainer that supports natural foot motion for all-purpose training, specifically gym, dance, and aerobics. The ninth model in a line of Flex Trainer shoes, this updated version is ready for any exercise that's low-impact, yet intensive. The lightweight, breathable upper and supportive platform sole are designed to endure endless flexibility and traction in every direction. Forefoot cables provide a secure, locked-down fit, too. This particular style carries a black, white, and gold color scheme.