Box calf is a full grain leather in its most natural state, without additional treatment after tanning. Note that this type of leather will appear a little dull (until polished). The box calf is the regular calf leather used on men’s shoes ready made collection in most highly reputable brands.
If you are looking for an everyday lifetime companion, this will be your choice of leather. Simply because, it has not been polished, embossed or sanded, all of which makes the shoe slightly fancier.