Marc by Marc Jacobs "Katie" Laser-Cut Chain Turnlock Bracelet. Excellent used condition Material: The main band is constructed from structured, matte black leather fashioned into an interconnected, geometric laser-cut chain-link design. Hardware: It features polished, gold-tone plated hardware engraved with the signature "Marc by Marc Jacobs" brand text wrapping around the round clasp plate. Dimensions: The piece measures approximately 20mm (0.78 inches) in width and roughly 7.5 inches in total length from end to end.