Pro-Knot's Outdoor Knots card set is an excellent addition to your survival kit, workshop, camping gear, etc. With instructions and suggested uses for 20 different knots, you can use this wallet-sized set to learn new knots, or as a reminder for knots you're a little fuzzy on.
Weighs less than 1 oz., and the same size and thickness as 6 credit cards.
Printed on waterproof plastic, so they'll resist moisture.
Instructions and uses for 20 different knots printed front and back on 6 different cards.