A heel is the bottom, back part of a shoe or boot that provides elevation. The styling and construction of a heel may vary (i.e., stacked, stilletto, spiked, sculptured, kitten).
About Quarter Strap Sandals:
Quarter Strap Sandals are sandals which have a portion of an ankle strap across the front of the ankle and then a heel cup covering the back of the ankle where the strap attaches on either side.