100% Silicone adjustable eyewear retainer available in 30 different colors with one universal length comparable to our 16". They come with our universal rubber end which fits most framed glasses.The Cblz Silicone Adjustable are designed to be worn full length or can be adjusted for maximum comfort and versatility!Features:Adjustable 100% Silicone16" Length is so flexible it stretches easily to 32"Available in Universal SiliconeSilicone Black is offered in 3 Silicone end sizes: Universal end, XL end, Skinnyz (XS) endAvailable in 30 Color VarietiesDurable, Lightweight, Low Profile, WaterproofNon-ConductiveTip: Use an alcohol-based hand sanitizer to apply Cablz to your eyewear for easy application and secure fit.