custom denim shorts for men are great for using strong and durable fabrics, as they are often worn in more active situations.  Here are some suitable fabric choices:  

Cotton denim: This is the most traditional denim shorts fabric, which is airy, wicks sweat and gets more comfortable over time.  Cotton denim can also be pre-washed to reduce shrinkage and increase softness.  

Stretch denim: Denim with a small amount of Spandex or other elastic fibers can provide greater comfort and flexibility for those who want their shorts to fit their body curves more closely.  

Blended denim: Blending cotton with polyester increases the durability of the fabric and is often easier to care for because blended fabrics are less wrinkled and easier to iron than cotton fabrics.  

Lightweight denim: While denim is generally heavier, there are some thinner styles available for warmer climates.  

You can choose the right fabric to customize custom denim shorts for men according to your needs and preferences.  In addition, consider some eco-friendly fabrics, such as organic or recycled cotton, which have less impact on the environment.  In the customization process, the color and pattern of the washing effect of the fabric can also be considered to achieve personalized needs.