Here are two cool words: hydrophilic (likes moisure and wicks it up) and hydrophobic (hates/resists water). Hydrophilic materials pull moisure from the horse's back and move it along. You might hear some people argue that the wet back is lubricated -- not true, at least according to researchers. The wetness causes stretching and pulling on the skin and hair, as well as slippage, which can lead to sores and soreness.
