Jack blinks slowly at the touch and his gaze slides to Isaac's face. He's incapable of focusing completely, but he holds it as long as he can before it starts to hurt his head and he has to close his eyes and shift his glance. His eyes travel down and he notices for the first time what Isaac's wearing.

Without much regard for what Isaac's doing, as he has trouble focusing on more than one thing at once, Jack reaches out his hand slightly and rubs the back of it on Isaac's sleeve for the half moment he can manage to lift his arm before it has to fall back on the bed.

It takes a long time to process.

That's his sweater.

Isaac why are you wearing his sweater you got blood all over it.

He liked that sweater.