Premium Thin Dress Laces with Copper Tips by Bondi Laces - Pencils of Promise polyester 75cm / 29" long (Suitable for 3-5 Pair Of Eyelets) All laces are backed by a 10 year guarantee High Density Polyester Weave, with a Dual Nylon Core, and Copper Aglets For every pair purchased, Bondi will provide one week of education to a child in need.