The Coal Black Blake Silver and Braided Leather Eyewear Strap was both designed and skilfully handcrafted completely in Great Britain In Quality We Trust. For the Modern Journeyman (and woman) ANCHOR & CREW takes ownership of an exploratory lifestyle and enjoys the Happy-Good Life. Combining British craft manufacturing with a discerning modern-minimalist style this ANCHOR & CREW eyewear strap features: Genuine and natural round-shaped braided leather (GB) Secure solid .925 sterling silver hexagonal loop-clasp and miniature divider pulley (GB) SIZING This eyewear strap is one size fits all with the leather able to extend or tighten to suit your ear-to-back length. To take the eyewear strap on or off your glasses simply tighten the knots around the glasses\' temples (arms) and to adjust the strap\'s length simply slide the miniature divider pulley around the leather to make the loop size smaller or larger.