4-Row
For FFS-M1 or FFS-M2 shells can also be used as replacement Foam for Medium Waterproof Cases
Features
Medium size foam insert for Middle to large size flies (#4 to #10)
5-Row
For FFS-M1 or FFS-M2 shells can also be used as replacement Foam for Medium Waterproof Cases
Features
Medium foam insert for nymphs, small streamers and dry ies
7-Row
For FFS-M1 or FFS-M2 shells can also be used as replacement Foam for Medium Waterproof Cases
Features
Medium size foam for small size flies (#12 to #18)