Material:Alloy,SiliconeSize:Length about 65cmItem Type:Eyewear AccessoriesEyewear Accessories:Chains & LanyardsOccasion:Party,Anniversary,Engagement,Wedding,DailyIt is a great jewelry,but also very durable and never rust.Whether sports,travel,or the party,it is the best partners of your glasses.Package Included: 1 * Glasses Chain ( Glasses Chain only, other accessories not included!)Note:1. There is 2-3% difference according to manual measurement. Please check the size carefully before you buy the item.2. Please note that slight color difference should be acceptable due to the light and screen.