The basic flat done right. That’s the Kenneth Cole Reaction Slip On By. Slip on these womens flat shoes and go about your day in simple style in a versatile shape. This womens ballet flat is set in a soft leather upper and lined in pig leather for a luxurious feel. The perfect polish for any outfit, slip on the Kenneth Cole Reaction Slip On By.With understated lines in leather, Kenneth Cole REACTION’s Slip On By flat proves easy enough to pair with anything. Rubber sole.