Pro Ears Pro Slim Gold- Medium profile cup is perfect for most firearms. Excellent choice for the avid pistol shooter or IDPA or IPSC competitor. For use on outdoor handgun ranges, comfortable all day wear. For moderate to high noise environment; better noise reduction than most foam ear plugs. The lighter weight makes this more appropriate for women in a high noise environment. Apple iPod, CD, motor sports scanner or radio compatible using a 3.5 mm mini jack. Enjoy high fidelity sound while protecting your hearing.