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Why Do Running Shorts Have Built In Underwear Why Do Running Shorts Have Built In Underwear

Exercise & Fitness

Why Do Running Shorts Have Built In Underwear

Written by: Kathye Kellam

Discover why running shorts have built-in underwear for ultimate comfort and support during your exercise and fitness routines.

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Welcome to the world of running, where every little detail matters, even down to the type of shorts you choose to wear. If you’ve ever shopped for running shorts, you may have noticed that many of them come with built-in underwear. You might have wondered why this feature is included in some shorts and what benefits it provides.

The function and purpose of built-in underwear in running shorts go beyond just providing an extra layer of fabric. The design of these shorts takes into consideration the specific needs of runners, ensuring maximum comfort, support, and convenience during their workouts. In this article, we will explore the reasons behind the inclusion of built-in underwear in running shorts, the benefits it offers, the different types available, factors to consider when choosing them, and alternative options.

Whether you’re a seasoned runner or just starting out on your fitness journey, understanding the role of built-in underwear in running shorts can help you make a more informed decision when selecting the gear that suits your needs.


The Function of Built-In Underwear in Running Shorts

The inclusion of built-in underwear in running shorts serves several important functions that contribute to the overall performance and comfort of runners. Here are some key functions:

  1. Moisture Management: One of the primary purposes of built-in underwear is to enhance moisture management. Running is a high-intensity activity that can make you sweat profusely. The underlying moisture-wicking fabric of the built-in underwear helps draw sweat away from your skin, keeping you dry and comfortable.
  2. Reduced Chafing: Chafing is a common issue for runners, especially during long-distance runs. The built-in underwear creates a barrier between your thighs, reducing friction and minimizing the chances of chafing. This can greatly enhance your running experience and prevent discomfort.
  3. Support and Stability: The built-in underwear provides essential support and stability to your pelvic region. It holds your genitals and glutes in place, reducing excessive bouncing and movement. This support can help prevent strain, discomfort, and potential injuries during your runs.
  4. Added Convenience: Having built-in underwear eliminates the need for wearing separate underwear, simplifying your running routine. It allows you to forgo the hassle of choosing and adjusting separate undergarments and gives you the freedom to focus solely on your run.

The function of built-in underwear goes beyond basic coverage and modesty. It plays a significant role in enhancing your overall comfort, performance, and enjoyment while running. Understanding these functions can help you appreciate the importance and value of this feature in running shorts.


Benefits of Built-In Underwear in Running Shorts

The inclusion of built-in underwear in running shorts offers a range of benefits that cater specifically to the needs of runners. Here are some key advantages:

  1. Improved Comfort: Built-in underwear is designed to provide optimal comfort during your runs. The moisture-wicking fabric keeps you dry and prevents chafing, while the supportive structure reduces bouncing and enhances stability.
  2. Enhanced Performance: The comfort and support provided by built-in underwear can significantly improve your performance. With reduced discomfort and distractions, you can focus more on your run and maintain your pace for longer durations.
  3. Convenience: Built-in underwear eliminates the need for wearing separate undergarments, saving you time and effort. You can simply slip on your running shorts and be ready to hit the road without any additional preparations.
  4. Cost Savings: Running shorts with built-in underwear can be a cost-effective option. Instead of purchasing separate underwear specifically for running, you can invest in shorts that already include this feature, saving you money in the long run.
  5. Improved Hygiene: The antimicrobial properties of the built-in underwear fabric help prevent the growth of odor-causing bacteria. This can keep you feeling fresher during and after your runs, and reduce the frequency of laundering your running gear.

These benefits make built-in underwear a valuable feature in running shorts. They not only enhance your comfort and performance but also provide convenience and cost savings, making your running experience more enjoyable overall.


Different Types of Built-In Underwear in Running Shorts

Running shorts with built-in underwear come in various styles, each offering different features and benefits. Here are some common types:

  1. Briefs: Brief-style built-in underwear provides full coverage and support. They offer a secure fit and are suitable for runners who prefer a snug and compression-like feel.
  2. Boxer Briefs: Boxer briefs combine the length of boxers with the supportive fit of briefs. They offer more coverage than briefs and are a popular choice among runners who prefer a balance between support and freedom of movement.
  3. Compression Shorts: Compression shorts have a built-in compression layer that provides muscle support and enhances blood circulation. They offer a tight fit and are ideal for runners who want maximum support and muscle recovery.
  4. Boyshorts: Boyshorts provide a longer cut and more coverage, making them suitable for runners who prefer extra modesty and minimal leg exposure.
  5. G-Strings/Thongs: This type of built-in underwear offers minimal coverage and is designed for runners who prioritize minimalism and freedom of movement.

The type of built-in underwear you choose depends on your personal preferences and the level of support and coverage you desire. Experimenting with different styles can help you find the one that suits your needs and makes you feel comfortable during your runs.


Factors to Consider When Choosing Running Shorts with Built-In Underwear

When selecting running shorts with built-in underwear, there are several important factors to take into consideration. These factors will help ensure that you choose a pair of shorts that meet your specific needs and preferences. Here are some key factors to consider:

  1. Fit: The fit of the shorts is crucial for your comfort and performance. Look for a pair that offers a snug yet not overly tight fit, allowing for free movement without excessive fabric bunching.
  2. Length: Consider the length of the shorts based on your personal preference and the type of running you do. Shorter lengths provide more freedom of movement, while longer lengths offer additional coverage and modesty.
  3. Material: The material of the shorts should be lightweight, breathable, and moisture-wicking to keep you cool and dry during your runs. Look for fabrics like polyester or nylon blends that offer these properties.
  4. Support: Evaluate the level of support provided by the built-in underwear. It should hold your private areas comfortably without feeling too restrictive or loose. Consider the type of activities you engage in and whether you require extra support or compression.
  5. Comfort: Prioritize comfort when choosing running shorts. Check for features like flatlock seams to minimize chafing, a comfortable waistband that stays in place, and a non-restrictive leg opening.
  6. Durability: Ensure that the shorts are made with high-quality materials and construction to withstand regular wear and washing. Look for reinforced stitching and durable fabrics that will last through many miles of running.
  7. Style: While not as important as functionality, consider your personal style preferences when selecting running shorts. Choose a design or color that makes you feel confident and motivated.

By considering these factors, you can find a pair of running shorts with built-in underwear that not only suits your needs but also enhances your overall running experience.


How to Properly Maintain Running Shorts with Built-In Underwear

Proper maintenance of your running shorts with built-in underwear is essential to ensure their longevity and performance. Here are some tips to help you care for them:

  1. Follow Washing Instructions: Always check the care label on your shorts for specific washing instructions. In general, machine wash them in cold water with a mild detergent. Avoid using fabric softeners as they can reduce the moisture-wicking properties of the fabric.
  2. Avoid Excessive Heat: High heat can damage the fabric and elastic of your shorts. It is best to air dry them or tumble dry on low heat. Avoid ironing or exposing them to direct sunlight for extended periods.
  3. Avoid Harsh Chemicals: Avoid using harsh chemicals, bleach, or stain removers on your shorts as they can degrade the fabric and affect the built-in underwear’s performance.
  4. Store Properly: Fold your running shorts neatly and store them in a clean and dry place. Avoid storing them in damp or humid environments that can promote the growth of bacteria and mold.
  5. Check for Wear and Tear: Regularly inspect your shorts for any signs of wear and tear, such as loose threads or stretched elastic. Repair or replace your shorts as needed to maintain their performance and comfort.
  6. Rotate Between Pairs: If you have multiple running shorts with built-in underwear, rotate between them to prolong their lifespan. This allows each pair to fully dry and rest between workouts.

By following these maintenance tips, you can ensure that your running shorts with built-in underwear remain in optimal condition, providing you with long-lasting comfort and support during your runs.


Alternatives to Running Shorts with Built-In Underwear

While running shorts with built-in underwear offer convenience and specific benefits for runners, they may not be the ideal choice for everyone. If you prefer alternatives, here are some options to consider:

  1. Running Shorts with Removable Liners: Some running shorts come with removable liners, allowing you to have the option of using them or wearing separate underwear. This versatility gives you the freedom to choose what works best for you during your runs.
  2. Compression Shorts: If you prioritize muscle support and recovery, compression shorts can be a great alternative. They provide the benefits of a snug fit and moisture-wicking fabric without the built-in underwear component.
  3. Running Tights or Leggings: For colder weather or those who prefer more coverage, running tights or leggings can be a suitable alternative. Pair them with your preferred style of underwear for comfort and support.
  4. Running Skirts or Skorts: If you prefer a more feminine look, running skirts or skorts can be a stylish alternative. They often come with built-in shorts or undergarments that offer coverage and convenience.
  5. Separate Underwear: If you have specific underwear preferences or already own running underwear that you find comfortable and supportive, you can wear them with any regular running shorts or bottoms.

Ultimately, the choice of alternative running gear depends on your personal preferences, comfort, and specific needs. Experiment with different options to find what works best for you and enhances your running experience.



Choosing the right running shorts is essential for a comfortable and enjoyable running experience, and the inclusion of built-in underwear can provide numerous benefits. These shorts are designed to enhance your comfort, support, and performance while eliminating the need for separate underwear. From moisture management and reduced chafing to added convenience and cost savings, the built-in underwear serves a crucial function for runners of all levels.

When selecting running shorts with built-in underwear, consider factors such as fit, length, material, support, and comfort. Find a pair that suits your preferences and provides the level of support you need for your runs. Additionally, proper maintenance, including following washing instructions, avoiding excessive heat, and storing them properly, ensures the longevity of your running shorts.

However, it’s important to note that running shorts with built-in underwear may not be the best option for everyone. Alternatives such as running shorts with removable liners, compression shorts, tights or leggings, skirts or skorts, and separate underwear provide different options to suit individual preferences and needs.

Whether you choose running shorts with built-in underwear or opt for an alternative, the most important thing is to find gear that makes you feel comfortable, supported, and confident during your runs. By understanding the functions, benefits, and alternatives, you can make an informed decision that enhances your running performance and overall enjoyment of your fitness journey.

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