Ergodyne - EGO19342 Use these 3251 Breakaway Rope Eyewear Lanyards to keep your glasses secure and within reach at all times. Hang lanyard around your neck so you can easily remove/use glasses whenever needed. Open loops slide over the sides of your glasses for a tight fit that won't loosen throughout the day. Activate breakaway design by pulling on lanyard to prevent entanglement and enhance safety while on the job. Loops minimize excessive bulk near ears for comfortable, all-day wear for a variety of temple sizes. Made of 3mm braided, nylon rope, these lanyards outlast the toughest conditions. Rope minimizes skin irritation.