[bobcowan]

I buy ear plugs by the gross lot. I use them in any open vehicle - jeeps, trucks, motorcycles, cobras - and any aircraft. I also use them anything that might be noisy in the garage, like head porting or metal working.

Try a few differant types until you find the ones that fit you well. I like the ones from Whitehorse Press. I also like the one's that come in a big box at Home Depot, they also fit me well.