what is the difference between heart of the hide and pro preferred

WHAT IS THE DIFFERENCE BETWEEN HEART OF THE HIDE AND PRO PREFERRED?

PRO PREFERRED FEATURE KIPSKIN LEATHER WHERE AS HEART OF HIDE FEATURE TOP 5% STEERHIDE. PRO PREFERRED COST $100 MORE BUT DOESN'T HAVE AS MANY OPTIONS WITH COLOR WEB AND SIZE AS HEART OF THE HIDE OFFERS. BOTH GLOVES ARE CONSIDERED A PRO QUALITY MITT.. BallGloves.com Questions ballgloves.net