Radians Retail Box with Custom Molded Red Ear Plugs. Radians Custom Molded Ear Plugs come in an easy do-it-yourself kit which molds in 10 minutes. Hearing protection ear plugs by Radians can be used in dozens of activities including shooting sports sporting events construction lawn care assembly lines farming auto races swimming flying factories and more. Radians Hearing Protection is designed to provide all day comfort and most importantly to protect the ear from exposure to extreme sound levels that can permanently affect a person's hearing.