The third edition of the Wilderness Medicine Handbook is a full color version of our text book edited for field use. It is small enough to carry in your back pocket or life jacket and weighs only 4.8 ounces. The 4.25 x 5.5 x 3/8 inch 140 page handbook is printed on waterproof/tearproof paper and is almost indestructible. A plastic coil binding permits the handbook to remain open to the selected page. Similar to its parent text, problems are broken down according to their mechanism of injury (MOI): trauma, environmental, or medical with decision making indexes preceding each major section. Treatments are highlighted for fast identification. While the handbook briefly explains each problem, it does not delve deeply into anatomy & physiology, pathophysiology, or basic life support skills; users are expected to have a working knowledge of wilderness medicine. The completely updated and rewritten handbook has clear assessment photos, useful diagrams & charts, and expanded splinting, wilderness toxins, and medical section. Not merely another book, the Wilderness Medicine Handbook is a mandatory tool for all guides, trip leaders, and backcountry users. The third edition includes new topics and better diagnostic algorithms; it should be part of every wilderness first aid kit.