You need to know how to tie knots folks! This is a skill that is not only fun to learn but putting it to good practice makes life a lot easier. This item contains 22 knots specially selected for outdoor scenarios, camping, backpacking, day hiking, thru-hiking, scouts, preppers, and wilderness survivalists. Approximately credit card-sized, this portable knot book contains simple diagrams demonstrating how to tie the most useful rope knots, along with descriptions and usage tips. Also, includes a mini carabiner for clipping to your backpack. M72