radioflyer:
if the company is earinc (or a dealer/provider of earinc), they are great...I have a set of the insta-mold earplugs...just make sure you ask them to not trim down the length too much...the noise reduction is around 33 from what I remember...I've had the same set for almost 2 years now and they still work flawlessly
http://www.earinc.com/p1-nonelectron...tamold-rec.php