SWANS Eyeglass Strap BK Black Eyeglass Cord Glass Cord Eyeglass Chain A strap for SWANS sunglasses. It can be hung around the neck when the sunglasses are removed, preventing loss. The attachment is a silicone rubber ring, so it can be attached to normal sunglass temples (up to about 8mm thick). Strap: Braided cord Attachment: Silicone rubber Easy to install. Simply thread the temples through the loops and tighten. Total length: Approximately 70 cm Used a few times, it's a used item. Will be sent in simple packaging. Please ask any questions before purchasing. No claims, no returns.