The Alpine Formula 1 Earplugs were purchased for use at an IndyCar race. I was skeptical when I first placed them in my ears, thinking they would be uncomfortable, ineffective, or would easily fall out. Much to my surprise, they were comfortable, easy to insert, stayed in place, and provided a filter to the engine noise. I could still converse easily with my wife, who also used the earplugs. A connection cord helps prevent the risk of losing the plugs should they fall out. Comes with a carrying case. These earplugs are easily recommended.