How does Gladwell characterize Goliath’s size and equipment?

Gladwell says that Goliath is a six-foot-nine-inch giant who wears a bronze helmet and armor made of overlapping plates, which must have weighed a hundred pounds. Gladwell says that Goliath is armed with a thrusting javelin made of bronze, a short-range spear and a sword, and is accompanied by a shield bearer.