"BOOTZILLAS are one of the family of DR's EXTRA-Life coated bass string sets. DR HandMade Bass Strings, makers of the world's finest handmade bass strings, combine the latest wire technology with old-fashioned craftmanship. The costly stainless-steel wrap wire used to manufacture BOOTZILLAS is unique. It produces a distinct "crunchy tone". DR's EXTRA-Life bass strings are the world's finest coated bass strings. The coating includes a corrosion inhibitor for extra protection against damaging substances such as prespiration, dirt, humidity, and "acid hands". DR's EXTRA-Life offers players a superior coated string without sacrificing the tone, clarity and volume of DR HandMade uncoated strings."