Production Time: 50 business days - Make some noise with your next branded promotion with these pro-designed earplugs! These silicone earplugs are ANSI certified, and include a weighted nylon string to help them stay put. Each set includes a 3 1/2" x 3/4" plastic protective case with a short beaded chain to connect to a keyring. Choose from a wide range of colors and shades, and add your organizational or company logo or emblem to the carrying case. You can even add a full-color swag book to hammer your message home. Makes a great giveaway for the worksite, concerts, pep rallies, sporting events and other loud business and social activities.