JMC Greisse Bas De Ligne Compétition is a sticky grease specially formulated to improve the buoyancy and visibility of the leader. Its fluorescent color makes it easier to spot the line while fishing and to detect even the most inconspicuous bites. Easy to apply, it provides optimum surface hold and helps ensure perfect presentation of nymphs and dry flies. An indispensable product for technical and competitive anglers looking for precision and efficiency.