The Drennan ESP Hi Performance Carp Mono is the result of almost two years research and development, during which time Drennan have evaluated leading lines on the UK market. From the outset Drennan's objective was to achieve a line which primarily exhibited superior abrasion resistance, closely followed by exceptionally high knot strength to diameter ratio. The final criteria was to incorporate these properties into as limp and as supple a line as possible. The colour was extensively researched and the colour shade of green was found to be unobtrusive in very clear water.