User blog comment:JetGatlingGun00/One Piece Volume 65 Cover/@comment-22857866-20120128184228

Well i still think that is fist was inside the bubble when it hit hody but it might just be my speculation

[[File:Gomu gomu no red hawk.jpg|300px]

and has you can see the flames seem to dissapear or get thiner has they get off the bubble too btw his fist only ignites when inside the bubble probably cause of the oxygen