The "Dually" Lanyard is great for trade shows or any event! Cardholders wear their badge on the show floor, then the breakaway lanyard can be taken apart after the event. and the user is left with a logo'ed eyeglass strap and a zipper pull. An innovative way to keep your logo on the customer, even after the event. Works with reading glasses, sunglasses, any glasses! (well... not drinking glasses)