Having tried several different types of ear plugs (foam to custom and in between), I have found that my go to pair are Baby Blues from Etymotic. They are easy to insert and remove, are extremely comfortable, and don't leave my ears ringing after a long ride. As a rider with hearing loss, I urge all to find and use ear protection when riding. I did not care for my hearing (power equipment, loud music, riding, etc.) when younger and am paying the price now. The cost for replacement hearing aids for me cost as much as a new 400. Fortunately I am not in need of a new scooter.