The Red Hot Chili Peppers count on Flea to provide that hard driving bottom end and these strings are a crucial part of that signature sound. Using the Bass Boomers formula found in their entire line (nickel-plated steel with a special combination of stainless steel and nickel-plate on the low E string), Flea is able to provide the bottom end to the RCHP sound that has inspired many for decades.
The GHS Boomer Bass guitar string is just a solid, quality string. A very popular bass guitar string.
These strings have nickel-plated steel for the wrap wire, with the low E & B having a combo of stainless steel and nickel-plate, wound on a hexagonal core.
They also have a nice mid range punch.
Check the video below for further details and sound!