A modification of an Interest rate floor. With a standard interest rate floor, the notional amount remains the same at each reset date. If any floorlet should expire out-of-the-money, its value is lost forever and the buyer does not have the opportunity to utilise it at some point in the future. The rolling floor seeks to remedy this shortcoming by rolling any un-exercised floorlet notional amount onto the next period. Where the floor remains un-utilised, the notional amount will continue to increase, providing increased protection to the buyer. A rolling floor where the buyer has the choice of what amount to roll forward is known as a super flexible floor.