Carson Gripz Eyewear Retainers for Larger Frames, Black Ash, Large Lab Tested to Hold the Weight of One Brick earning the seal of "Brick Tested Tough" Engineered from High Grade Braided Silicone Which Allows the Gripz to be very Heat Resistant Fits Larger Sized Frames Designed to have a secure hold and protect your eyewear under the harshest conditions Covered by Carson's One Year Limited Warranty