Hairpin lace is a lace-making technique that uses a crochet hook and two parallel metal rods held at the top and the bottom by removable bars. Historically, a metal U-shaped eponymous hairpin was used. Various types of yarns and threads can be used to achieve different color, texture and design effects. Examples of items made with hairpin lace include scarves, shawls, hats, baby blankets, afghans, and clothing. Hairpin lace can also be added to sewn, knitted, and crocheted works as a decorative accent.