The Xpand Laces are a long-lasting elastic lace made of zero-memory elastic rubber that provides unswerving comfy fit throughout your day. The Xpand laces works on all types of shoes. The pack contains a pair of elastic laces which measures 52 inches long and can be stretches out to over twice its length. Ensure that you try out the length before trimming the laces for a comfortable fit. It includes 4 Xpand patented lace anchors and 4 end clips.