It is a blend of the best caseins, lactalbumin, milk and whey proteins and yet retains a high degree of solubility, as well as a few little 'edges' that unique to Mainline.
It is a mix that can be used with any liquid additives and rolls very easily indeed. For those anglers who prefer a hard bait or tough hookbaits, a 50/50 mixture of Protein Plus with your other chosen base mix, will result in a much harder and more durable bait.