Know Your San Diego Jam Knot Tee Shirt by Southern TideDetails 60% Cotton 40% Polyester Graphics located on left chest and back Open sleeves Ribbed collar band Printed label for comfort Machine wash cold, tumble dry low, remove promptly Hang dry recommended to prevent shrinking Benefits If you've spent any time chasing tuna on long range boats in Mexican waters, you've probably used the San Diego Jam to tie your heavy iron jigs. You may know this know as the Reverse Clinch or Heiliger knot, since you're