Our wide rib knit is a 2x1 rib knit made of 95% cotton and 5% Lycra. It is 250gsm and offers four-way stretch (generous horizontal stretch and moderate vertical stretch). It's wide, vertical "ribs" are conspicuously visible, giving the fabric its signature look. Wide rib knit is a popular option for children's clothing, especially pajamas. It is soft, stretchy, and has great recovery. Although a natural fiber, my manufacturer's use of reactive dyes and specialized pre-treatment and post-treatment processes results in bright, vivid colors that are resistant to fading.