Crafted from durable silicone and nylon rope, this eyewear retainer may help keep your glasses secure and within easy reach during outdoor activities or everyday use. Its lightweight, comfortable design may help provide long-lasting wear without discomfort. The adjustable strap, compatible with frame ends over 4.5mm, may help ensure a flexible fit for most head and neck sizes. Backed by a lifetime warranty, it may help offer added confidence in quality and support.