...

Why Do Running Shorts Have Lining on the Inside?

Share

If you’ve ever worn running shorts, you may have noticed the soft, built-in lining inside. While it might seem like an extra layer of fabric, this lining serves several essential purposes that improve performance and comfort during exercise.

Running shorts have lining on the inside to provide support, reduce chafing, and enhance comfort. The lining eliminates the need for additional undergarments, allowing for unrestricted movement and improved breathability.

This article explores the benefits of lined running shorts, the types of linings available, and how they can improve your running experience.

Close-up of beige sports shorts with an elastic waistband and a zippered pocket for functionality.
Detail of Beige Sports Shorts

What Is the Purpose of Lining in Running Shorts?

The inner lining in running shorts is more than just a design feature—it’s a functional component that enhances performance and convenience. Here’s why it’s included:

1. Provides Built-In Support

The lining acts as an integrated layer of support, much like a pair of brief-style liners1:

  • Support for Movement: Keeps everything securely in place, reducing discomfort during intense activity.
  • Eliminates the Need for Undergarments: Streamlines your running gear, reducing bulk and potential irritation.

2. Reduces Chafing and Irritation

Running involves repetitive motions that can lead to skin friction and chafing:

  • Smooth Fabric: The lining’s soft material prevents skin from rubbing against the outer fabric.
  • Flat Seams: Many lined shorts feature flat seams to minimize irritation further.

3. Enhances Breathability

The lightweight, breathable fabric used in linings helps wick moisture away from the skin:

  • Moisture-Wicking Properties: Keeps you dry and comfortable by drawing sweat away.
  • Ventilation: Promotes airflow, reducing the risk of overheating.

4. Adds Modesty

The lining provides an additional layer of coverage, especially for lightweight or thinner running shorts:

  • Prevents Transparency: Ensures the shorts remain opaque, even during vigorous movement.
  • Secure Fit: Prevents accidental exposure, giving runners confidence and peace of mind.

Types of Linings in Running Shorts

Different types of linings cater to various preferences and activities. Understanding the options can help you choose the best pair for your needs.

1. Brief-Style Linings

  • Design: Resembles built-in briefs with elasticized edges.
  • Benefits: Offers snug support and minimizes movement.
  • Best For: Long-distance running or high-intensity activities.

2. Boxer-Style Linings

  • Design: Longer, fitted liners akin to boxer-style lining2.
  • Benefits: Provides extra muscle support and reduces thigh chafing.
  • Best For: Runners prone to chafing or those who prefer additional coverage.

3. Mesh Linings

  • Design: Lightweight, breathable mesh material.
  • Benefits: Maximizes airflow and moisture management.
  • Best For: Hot-weather running or high-sweat activities.

Benefits of Lined Running Shorts

Lined running shorts are a popular choice for both casual joggers and professional athletes. Here are the key benefits they offer:

1. Convenience

  • Built-in linings eliminate the need for separate underwear, simplifying your running outfit.

2. Freedom of Movement

  • The streamlined design ensures you can move freely without restrictive layers.

3. Improved Hygiene

  • The moisture-wicking fabric keeps sweat at bay, reducing the risk of bacterial buildup.

Lined vs. Unlined Running Shorts: Which Is Better?

While lined shorts offer numerous benefits, unlined shorts also have their place. Here’s how they compare (learn more3):

Feature Lined Running Shorts Unlined Running Shorts
Support Built-in liner provides support. Requires separate undergarments.
Convenience Streamlined, no extra layers needed. Adds flexibility to choose undergarments.
Breathability Enhanced due to moisture-wicking liners. Depends on chosen undergarments.
Best For Runners seeking simplicity and comfort. Those who prefer customized layering.

How to Choose the Right Running Shorts with Lining

When selecting running shorts with lining, consider these factors:

1. Activity Type

  • Long-Distance Running: Opt for brief-style linings for maximum support.
  • Sprints or Gym Workouts: Choose boxer-style linings for added muscle support and coverage.

2. Material

Look for lightweight, moisture-wicking fabrics like polyester or nylon. Some brands use proprietary tech (e.g., Nike Dri-FIT4) for better sweat management.

3. Fit

  • Ensure the liner fits snugly but doesn’t dig into your skin.
  • The outer shorts should allow for natural movement without excess fabric.

4. Additional Features

  • Pockets: Handy for carrying essentials like keys or energy gels.
  • Waistband: Adjustable drawstrings or elastic bands ensure a secure fit.

Caring for Running Shorts with Lining

To keep your lined shorts in top condition, follow these care tips (best practices5):

1. Wash Regularly

  • Machine wash in cold water to preserve the moisture-wicking properties.
  • Avoid fabric softeners, which can reduce breathability.

2. Dry Properly

  • Air-dry whenever possible to maintain the fabric’s elasticity and durability.

3. Store Correctly

  • Fold and store in a dry place to prevent mildew or odors.

Popular Brands Offering Lined Running Shorts

Several brands specialize in high-quality lined running shorts. Here are a few top options:

1. Nike

  • Features Dri-FIT4 technology for superior moisture-wicking.

2. Adidas

  • Offers a range of breathable, mesh-lined shorts with Aeroready fabric.

3. Lululemon

  • Known for their luxurious, soft linings that prioritize comfort.

4. Under Armour

  • Combines lightweight materials with HeatGear technology for optimal performance.

5. Gymshark

  • Modern designs with supportive liners for a tailored fit.

Conclusion

The lining in running shorts is a thoughtful feature that enhances comfort, functionality, and performance. By providing built-in support, reducing chafing, and improving breathability, lined shorts have become a favorite for runners of all levels. Whether you’re a casual jogger or a seasoned athlete, understanding the benefits of lined shorts can help you choose the perfect pair to elevate your running experience.



  1. Discover how built-in briefs offer support and reduce chafing during runs. 

  2. Learn how extended, fitted liners can prevent inner-thigh irritation and discomfort. 

  3. Understand key differences in support, convenience, and layering options. 

  4. See how advanced moisture-wicking improves breathability and comfort in running gear. 

  5. Get tips on preserving performance properties of athletic apparel during laundry. 

What are your Feelings ?

Jerry Lee

Your Personal Fashion Consultant

Hey, I’m the author of this piece. With 26 years inapparel manufacturing, we’ve assisted over 1000 apparel brands across 28 countries in solving theirproduction and new product developmentchallenges. If you have any queries, call us for a freeno-obligation quote or to discuss your tailoredsolution.

Boost your business with our high quality services

We are at your disposal for any technical or commercial information

CERTIFICATIONS

MODAKNITS Repsects Quality Standards

Gold Supplier
ISO9001
OEKO-TEX
organic cotton textile standard

📝 Get a Custom Apparel Quote – Fast, Secure & Easy!

We’ll get back to you within 24 hours. Attach your logo/design if needed.

📦 How It Works:

💡 1 . Share your logo, fabric, and quantity for T-shirts, hoodies, and more.

📐  2. We’ll prepare samples for your approval.

🚚  3. Bulk production starts after deposit.

✅ We value your privacy. Your information is 100% safe and confidential.
📦 Need help? Chat with us via WhatsApp anytime!

The ULTIMATE Guide to Costume Design in 2024

Catalog cover image

Note: Your email information will be kept strictly confidential.

The ULTIMATE Guide to Costume Design in 2023

Catalog cover image

Note: Your email information will be kept strictly confidential.

Wait! Don't Miss Out On Our Wholesale T-Shirts!

Note: Your email information will be kept strictly confidential.