Weight
We classify our leaders by which fly line weights they are best matched to. We offer leaders for 3wt and lighter lines, 4-6wt lines, and lines 7wt and heavier. Each weight of leader also has a different taper designed for the type of fishing most likely to be done using those fly line weights. Our light leader (3wt and under) is a great small fly leader well suited to smaller water, spring creeks, or other waters where light lines and fine delicate leaders and tippet are used. Our medium (4-6wt leaders) are a good all-round leader with plenty of turnover power, but versatile enough for many applications depending on tippet configuration. They are great for turning over bushy dry flies, and are a good choice for most trout fishing. Our heavy leaders (7wt and higher) are designed to turnover large, bulky flies and handle large fish. They are a great choice for bass bugs and certain trout/salmon/steelhead fishing.
There are no rules that require you to use a leader only with its designated line weights. For example, light leaders can be used effectively with 4wt or heaver lines when a more delicate presentation is needed. Likewise, medium weight leaders can be used with heavier lines, particularly with 7wt lines.