The I/O Spin Shoe brings Lakes years of cycling shoe experience indoors to enhance your spinning class The I/O 3 is different than many other spin shoes| because you can roll into class with them on and still be comfortable enough wear them home without that| I just left the stationary bike look| Similar in feel and appearance to a running shoe| the I/O 3s feature a quality Vibram sole| a functional SPD cleat cover| and non-marking soles