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Fabric Weights

Fabric Weight Basic Summary:

  • Very light: 0-4oz. 
  • Light: 4-7oz. 
  • Medium: 7-12oz. 
  • Heavy: 12-14oz. 
  • Very heavy: 14oz+ 

What is OZ Fabric Weight? (oz/y²)

In the context of material weight, oz stands for ‘ounces per square yard’.

As an example, if a material of size four yards squared weighs 20 oz, then the ‘fabric weight’ will be 5 oz (20/4).

Classification Weight Uses
Very light 2.5 oz+ Jacket linings, undergarments and lightweight performance wear.
Light 4 oz+ Regular and lightweight shirts.
Light 6 oz+ Thick or heavyweight t-shirts.
Medium 7 oz+ Light and medium weight sweatshirts, light suits and blazers.
Medium 9 oz+ Heavy weight sweatshirts
Heavy 12 oz+ Heavier cloths, such as flannel and denim jackets.
Very Heavy 14 oz+ Extra thick sweatshirts, woven outerwear, or sports coats made of thick material.

Fabric Weight Breakdown

2.5 - 4oz (Very Lightweight)

Cloths in this category are very light, and are usually very breathable, making them great for summer.

4 – 7oz (Lightweight)

Clothing made of lightweight material can potentially be worn all year round. For example, a t-shirt can be worn during the winter, given correct layering.

7 – 9oz (Medium)

Slightly heavier/lower-midweight. Includes ‘linen’ as a material, which is known for producing light weight variants of traditionally heavy clothing, such as suits and blazers. 

9 – 11 oz (Medium)

Transitional garments that are appropriate to wear in the Spring and Fall. Could potentially be worn year round, though it will be on the lighter side.

11oz – 12oz (Heavy)

Can be worn all year round. Heavier or lighter fabrics may be better for certain seasons, but 11-12oz is usually safe and appropriate for general wear.

12oz – 14oz (Heavy)

Fabrics that weigh between 12-14 ounces are considered ‘heavier fabrics’, and are most suitable in the winter. Usually heavy enough to insulate, but still maintain maneuverability without being too bulky. 

14oz+ (Very Heavy)

The heaviest category of cloth weight which is generally used for outerwear, such as overcoats, or upholstery. It is insulating, and generally doesn’t let in a lot of air.