P20 Knife tethered to case. Orange handled, sheep-foot serrated blade. Blade tethered ball facilitates one-hand opening. I'm a firm believer in the saying "One hand for rescue, one hand for me." During water rescue ops, one should keep a knife immediately accessible. Consider your knife as a self-rescue tool. Cutting free of entanglement may be your only means of emergency escape. PS: I have been informed of at least one occasion where a rescuer's life was saved by this style of one-hand-opening knife." Bob Davis, USCG (ret.) President MARSARS Water Rescue Systems, Inc.