The MC's feet-possibly the most under-rated part of his body. They get him where he needs to go, without them he's nothing. And of course in order to walk as much as he does, you need to proper foot wear, otherwise you'll get foot problems. Now pretend the Master Chief doesn't have the UNSC issue boots that come with the Mjolnir battle armor. So in order to combat the Covenant, Flood, and any other enemy that threatens humanity, the MC must make a trip down to his local Sears/JC Penny, etc... and pick himself up a pair of Nike's. Then the question arises: what size must he buy? The MasterChief is roughly 7ft 2in tall, as such he most likely has fairly large feet. Shaquille 'O Seil is around 7ft 1in, last time I checked, and has a shoe size of about 24 in US Males. So I think it is safe to assume that the MC feet are greater than or equal to the size of Shaquille's feet. It's a possibility that they're smaller, but considering he's a bio-engeneered, super soldier it's highly unlikely. Recently I had a Spartan stand next to two plasma grenades. One of Master Chief's feet (width) is equal to 1 plasma grenade, and is equal to(length) 2 plasma grenades(Yes, I just used plasma grenades as a unit of measurement!). I don't however, know the size of a plasma grenade is equivalent too, so using PG is a waste.