Lined shorts include a built-in supportive brief, while linerless shorts require you to wear your own base layer underneath.
The difference between lined and linerless shorts comes down to one layer of fabric, but that layer changes how the shorts feel, move, and perform. Lined shorts have a compression-style brief sewn inside, while linerless shorts are exactly what they sound like — a single shell with nothing underneath. The right choice depends on whether you want built-in support or the freedom to wear your own underwear.
What Are Lined Shorts?
Lined shorts feature an interior brief that functions like compressive boxer-briefs, giving you support and coverage in one garment. The liner is typically made from a moisture-wicking fabric that pulls sweat away from your skin, which helps reduce friction and chafing during running or training. Many lined shorts also include a small pocket inside the liner, often on the side, sized for a phone or keys.
The main advantage of lined shorts is simplicity. You grab one pair and you’re ready — no underwear to choose, no layers to manage. For runners and gym-goers who want consistent support without thinking about it, the built-in liner handles that job.
What Are Linerless Shorts?
Linerless shorts omit the built-in brief entirely, leaving just the outer shell. That means you wear them with your own underwear, compression shorts, or a base layer of your choice. The construction is simpler, which often translates to more airflow and a lighter feel, and the shorts work for both training and casual wear.
The tradeoff is that you lose the built-in support and the secure phone pocket that lined versions typically include. If you already own compression shorts you like, linerless shorts avoid the redundant layer and let you pair them with what works for you.
Lined vs Linerless: How To Choose
Your decision comes down to how you plan to use the shorts and what you’re willing to manage. If built-in support and anti-chafe performance matter most, lined shorts are the better pick. If you prefer more airflow, want to wear your own base layer, or need shorts that work both in the gym and around town, linerless is the way to go.
There’s a real risk of buying based on a wrong assumption. Retailers sell lined, linerless, and 2-in-1 versions side by side, so always check the product description for the liner before you buy. And if you do go lined, skip the extra underwear — adding a layer beneath the liner creates bulk and can cause chafing, which defeats the short’s purpose.
It helps to look at concrete examples. The lululemon Pace Breaker Shorts, a popular training option, come in both lined and linerless versions with 5-, 7-, and 9-inch inseams. lululemon also sells dedicated linerless running shorts, confirming both styles hold a place in an active wardrobe. If you’re shopping for shorts built for high-intensity workouts, our roundup of the best CrossFit shorts covers tested options for that specific demand.
Quick Comparison Table
| Feature | Lined Shorts | Linerless Shorts |
|---|---|---|
| Built-in support | Yes, compression brief | No, requires separate base layer |
| Airflow | Less, extra layer | More, single shell |
| Phone pocket | Often in the liner | Rarely, or absent |
| Chafe resistance | High, liner reduces friction | Depends on your underwear |
| Best for | Running, training | Casual wear, custom layering |
Which One Fits You?
Choose lined shorts when you want a single garment that handles support, moisture, and phone storage without extra thought. Choose linerless when you value airflow, want control over your base layer, or already use compression shorts and don’t need a second set of layers.
Fit and pocket behavior vary by model, so check the inseam, liner presence, and fabric composition before buying. Neither style is objectively better — the right pick depends on your workout and your preference.
FAQs
Can I wear underwear with lined shorts?
Technically yes, but it defeats the design. The built-in liner already provides support and moisture management, so adding underwear creates extra bulk and can cause chafing. Most lined shorts are intended to be worn without anything underneath.
Do linerless shorts have a phone pocket?
Typically not. A secure phone pocket is a common feature of lined shorts, often built into the inner brief. Linerless shorts usually rely on a standard outer pocket, which may not hold a phone as securely during movement.
Which is better for running, lined or linerless?
For running, lined shorts are generally the safer choice because the built-in brief prevents chafing and eliminates the need to coordinate underwear. Linerless shorts can work well if you already wear compression shorts or a base layer you trust.
References & Sources
- lululemon. “Pace Breaker Shorts” Confirms lined and linerless versions, inseam lengths, and fabric composition.
- lululemon. “Men’s Linerless Running Shorts” Confirms the brand actively sells linerless running shorts.
- Runner’s World. “lululemon Pace Breaker Shorts Review” Provides the $78 price point and liner fabric percentages.