12.1
We say, then, that in the first place his breastplate must be made to fit his body. For the wellfitting breastplate is supported by the whole body, whereas one that is too loose is supported by the shoulders only, and one that is too tight is rather an encumbrance than a defence.
12.2
And, since the neck is one of the vital parts, we hold that a covering should be available for it also, standing up from the breastplate itself and shaped to the neck. For this will serve as an ornament, and at the same time, if properly made, will cover the rider’s face, when he pleases, as high as the nose.
12.3
For the helmet we consider the Boeotian pattern the most satisfactory: for this, again, affords the best protection to all the parts that project above the breastplate without obstructing the sight. As for the pattern of the breastplate, it should be so shaped as not to prevent the wearer from sitting down or stooping.
12.4
About the abdomen and middle and round that region let the flaps be of such material and such a size that they will keep out missiles.
12.5
And as a wound in the left hand disables the rider, we also recommend the piece of armour invented for it called the hand.i.e., a gauntlet. For it protects the shoulder, the arm, the elbow, and the fingers that hold the reins; it will also extend and fold up; and in addition it covers the gap left by the breastplate under the armpit.
