Skates have a lot of variables – hollow, rocker, boot. Every NHL player has a custom skate to fit their particular liking ... Stiff skates allow for more torque so they don't break down ... Skates are sharpened by preference, but most are done before or after the morning skate ... A 1/2” hollow is pretty standard for most players in the League – not too deep, not too shallow and gives a little bit of ability ... The amount of hollow is based on personal preference and style of play, among other things. A heavier player typically doesn't need as deep of a hollow compared to a lighter player. A deeper hollow allows for more grip of the ice ... The rocker (curvature to the blade) affects how much blade is on the ice – more blade on the ice = more power ... Marian Hossa wears '38' on both skates on the outside heel of the blade in honor of Pavol Demitra.