Laser-printed on hard vinyl, this spiral-bound, index-tabbed, pocket-sized guide is virtually indestructible. Lays flat, water and dirt can't hurt it while you access "what you really need to know, when you really need it!" This title Primary surface food; trout vision; feeding characteristics; the take; rise process; feeding locations; dry fly categories; attractor patterns; mayfly types; leaders; presentation; weather/temperature; angler & pattern failure; Ten Commandments of Stealth; strategies; mayfly duns, spinners, emergers, stonefly, midge, caddis, terrestrials, attractors, searcher patterns; and great charts for eastern, midwestern and western mayflies! POCKET THE BIGGEST LITTLE BOOKS YOU'LL EVER NEED! 28 TITLES.