Super high speed 3.1 rewind ,15 oz. chalk capacity, durable case and the Keson orange makes it easy to find, ergonomic design for less wrist strain and recessed handle clasp stores the metal handle out of the way. Spring cleaner keeps the chalk from spraying, chalk catcher also reduces waste, Huge BigMouth opening to ease fill up and a no-leak stopper, glovable grip for cold weather or rough conditions.