These look super cool, not too flashy. The silver and navy blue section on the base of the shoe is reflective, looks great.
In terms of sizing, I bought a size 10.5 and wear an 11.5 in Nike. Anyone who tells you to buy these shoes 0.5 size larger is not an adept boxer. These shoes definitely run true to size. Unless you are Ronald McDonald, boxing boots need to be snug for energy transfer and pivoting. I would definitely recommend AGAINST sizing up a half size from your normal Nikes. If anything, buy your normal Nike size and a half size down. Then return the pair that doesn't fit. Remember too, these will stretch with use (mine have already stretched after 3 training sessions).
Also, the heel cup is loose for me. You can see in the picture the heel cup does not have extra padding like a normal Nike shoe and the way the boot is designed it doesn't cinch around your heel. I got some heel cup inserts for $3 from CVS and now these shoes fit like a glove.
Buy em, you'll love em and your boxing will vault to new heights.
Remember, the only way you can be like Floyd and Pacquaio is if you spend money on gear that they wear...it's a proven law, like gravity.