Cablz replaced their standard stainless steel tether with a monofilament line to create the ZipZ Adjustable Sunglasses Holder. The monofilament allows for the addition of a vibrant black color choice, while retaining the snag-proof design. This version features dual sliding adjusters to customize the size without causing extra material to hang, causing snagging hazards. The adjusters utilize a patented ball bearing design which enables them to move freely, even when it's cold. Adjustable for a custom fit with a max length of 14" (35.6cm), the rubber tips fit eye glasses with earpieces from 3 to 9mm (0.12 to 0.35") in width. This eyewear holder is an ideal choice for running, kayaking, fishing and many other outdoor activities where keeping your sunglasses safe and secure is important.Features:Max Length 14"Adjustable Length for Custom FitFits Earpieces from 3 to 9mm in WidthStrong Snag-Free Monofilament LineSpecifications:Package Weight: 0.05 lbBox Dimensions (LxWxH): 7.9 x 1.6 x 0.3"