rToken is short for reward Token. When you staking PoS token through StaFi, you will get an equal amount of rToken.For example,staking Atom,then you can get rAtom,staking XTZ then you get rXTZ. Owning rToken means that you have the right to redeem the corresponding amount of locked staked token, and the right to get staking reward. In addition, you can also trade rToken instead of staking token.