BERKLEY TRILENE TRANS-OPTIC LINE 220yds This mono-filament is perfect for flipping, jigging, Carolina rigging and dead sticking – applications where strike-detecting line visibility is essential. Trans Optic's clear color vanishes below the surface. Above the surface and exposed to UV light, it turns bright gold for maximum visibility. Trilene's decades-proven nylon co-polymer formula is abrasion- and shock-resistant and has excellent knot strength.