A Versatile Choice for Warm, Cozy Projects. Aran wool, a heavy-weight yarn with a gauge of 16-20 stitches per 4 inches (10 cm), is ideal for creating warm, cozy knitted and crocheted items such as blankets, sweaters, hats, and mittens. Its thickness and loftiness make it well-suited for projects that require added warmth and insulation, while its strong, durable nature ensures long-lasting wear. Aran wool's adaptability and range of colors make it a popular choice for crafting timeless, functional pieces that provide comfort during colder seasons.