J:Son Sweden’s Mayfly Spent is a realistic imitation of dead adult mayfly. It’s good choice for grayling and brown trout. Mayflies are found world wide and that’s why mayfly imitations are popular in every fisherman’s fly box. Fishing is best with adult mayfly imitations in early summer, May and June.
In the chart below you can see approximate fly and hook sizes:
| Model | Size | Hook size |
|---|---|---|
| 1 | 28 mm | #10 |
| 2 | 20 mm | #12 |
| 3 | 15 mm | #16 |
| 4 | 10 mm | #20 |
| 5 | 7 mm | #24 |





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