Maybe you can't "feel" this, but on Saturday I took a foul ball squarely on my left upper arm (side deltoid) as I caught. It hurt at the time, but mostly just tightened up. Then, three days later, it remained a bit swelled up and started draining down my arm. It still hurts to the touch at the point of contact, which isn't any fun because it also itches because of the abrasion from the seams on the ball. I think the "rainbow" colors are pretty cool. If you can't tell, it has some red, blue and purple where the blood is draining, and some yellow, green, orange where the blood has already drained and where the bruise is beginning to heal. :) Fun!