Quality Material:--The beads on the glasses chain are made of glass,comfortable to the touch. Our bead eye glass chains are made of polyester thread.The silicone rubber of the spectacle chain is soft and skin-friendly. Ideal Size:--70 cm (27.56 inches) for eyewear chain retainer straps. The lanyard has a diameter of 0.3 cm.The appropriate length ensures that they all rest on your chest when you take your glasses off. Glass fibre Classic Easily Adjustable:--Each pair of chain for glasses has removable loop ends on the neck cords that can be easily adjusted to ensure a snug fit on the arms of the glasses. Beautiful Design: --The beaded glasses cord strings is shiny and colourful, and is both stylish and fashion. You can also remove the silicone ends and use them as a funky necklace, bracelet, face mask lanyard, or to decorate a purse or backpack. Wide Applications:--Glasses lanyard strap can be used for women's and men's sunglasses,spectacles and other types of eyewear, ideal for outdoor and indoor activities. Sports, reading, decorative, work, it is your favourite eyewear companion. Warning:Not suitable for children under 6 years. For use under adult supervision Warning:To be used under the direct supervision of an adult