As temperatures drop, fall and winter are great seasons to try heavier denim. When shopping for Japanese jeans, you may see numbers such as “18oz” and “21oz.” But what actually changes as denim gets heavier? Here are the basics of heavyweight denim and the key points to know before choosing your first pair.
“oz” Indicates the Weight of Denim Fabric
Oz, or ounce, is a unit used to indicate the weight of denim fabric. Generally, a higher number means thicker, heavier fabric. However, even denim with the same ounce rating can feel different depending on the yarn and weaving method, so the number alone does not determine how the jeans will feel when worn.
Heavier Denim Changes the Stiffness and Feel
Heavyweight denim often feels firmer and more structured when first worn, and that substantial feel is part of its appeal. Creases develop with the movement of your body, while the fabric gradually becomes more comfortable with wear. Thick denim is not necessarily always warmer, but fall and winter can be good seasons to experiment with heavier jeans.
2 Heavyweight Denim Jeans to Find in Japan
Kojima Genes “18oz Straight Denim”
This 18oz model is worth considering if you want to introduce heavyweight denim into your everyday wardrobe. The substantial fabric has a firm feel and is cut in a classic straight silhouette. It has also been one-washed, helping reduce some of the initial stiffness associated with unwashed denim. Made in Japan, the jeans feature a zip fly.
View the 18oz Straight Denim at the Kojima Genes official online store
Kojima Genes “21oz Wide Denim”
If you want an even more substantial feel, this 21oz model is another option. It combines exceptionally heavy 21oz denim with a wide silhouette that provides extra room around the legs. The relaxed shape also considers ease of movement despite the thick fabric. It is a good choice for anyone who wants the distinctive presence of heavyweight denim in a roomier style.
View the 21oz Wide Denim at the Kojima Genes official online store
Check the Wash and Size, Not Just the Weight
When choosing heavyweight denim, check whether the jeans are rigid or one-washed as well as their ounce rating. Unwashed rigid denim may shrink after washing. Thick fabric can also feel restrictive at first, so it is important to check actual measurements such as the waist, thigh width, and rise before ordering.
Start Breaking In Your Own Pair This Fall and Winter
18oz and 21oz denim offer a firmness and substantial feel that lighter jeans do not. A higher number does not automatically mean a better pair of jeans. Consider whether you prioritize everyday comfort or the distinctive presence of extra-heavy fabric, then look for a pair you will enjoy breaking in and making your own throughout the colder seasons.
