Found another product folks might enjoy - for those who prefer earplugs vs. Music Earbuds
https://www.decibullz.com/custom-molded-earplugs/?sku=PLG1-ORG&gclid=CjwKCAjwvbLkBRBbEiwAChbckWzrvFRqN9x18KS4ZSdA5imECWEOYVSH1YYFufcklK987RZ47GpDGxoCgREQAvD_BwEVery comfortable, they come in multiple colors (to match to your helmet, hair or bike :) ), and take 5 minutes to mold to your ear.
Not quite the same recipe as Perrazimix...but perhaps just as enjoyable!
Boil water and pour into two coffee cups of your choice
Put left ear plug in left cup, right ear plug in right cup - don't put them together in the same cup as the plastic will stick to each other
Let sit for 5 minutes
Remove with a metal (not plastic) spoon and place on a wooden board for 30 seconds
Note which is left and right, gently insert and start molding to your ear
Leave in ear for 5 minutes
Place back plug on each earpiece, select the right ear insert
If for some reason the plug doesn't fit quite right, remove the ear inserts and backplug, boil water and repeat again
ENJOY!!