User blog comment:Neowitch/710 - Caesar for next Straw Hat!/@comment-4374114-20130605230731/@comment-210.195.159.107-20130606224251

MMeat

This type of Haki also has the ability to bypass the powers of a Devil Fruit user, touching the "substantial body" beneath whatever protection the fruit provides,

http://onepiece.wikia.com/wiki/Haki