Lined vs Unlined Shorts: What's The Difference?

Last Updated: August 2026 | Author: Ankit Mange, Founder, Chaze Fit | Reading Time: 4 minutes

Lined shorts have a built-in inner liner — usually a mesh or compression-style brief — sewn directly into the shorts, eliminating the need for separate underwear or compression shorts underneath. Unlined shorts are just the outer fabric with no inner layer, meant to be worn over your own underwear or compression gear. For most gym and running use, lined shorts are the simpler, more practical choice — one layer instead of two, less chafing risk, and no separate compression shorts to wash and pack.

What's Actually Different In Construction

Lined shorts have a second layer of fabric — typically a lightweight mesh liner in a brief or compression-short shape — stitched into the waistband on the inside of the outer shell. This inner layer sits directly against the skin, providing light compression and a moisture-wicking surface, while the outer shell handles the visible fit, stretch, and durability. Unlined shorts skip this second layer entirely — just the outer fabric, worn over whatever you choose to wear underneath.

Side-By-Side

Why Most Gym Shorts Are Lined By Default

The built-in liner solves the same chafing problem that drives people to wear compression shorts underneath unlined shorts anyway — it's just built into the garment instead of being a separate purchase. This is why most performance gym and running shorts, including the Chaze Fit AOP Sports Shorts, are lined by default.

Founder Note

We get asked fairly often whether people need to wear anything under our shorts, and the honest answer is no — the liner is built to be worn directly against skin. It took us a few fabric iterations to get the liner's stretch to genuinely match the outer shell's 4-way stretch, since a liner that doesn't move with the outer fabric defeats the purpose.

- Ankit Mange, Founder, Chaze Fit

The Chaze Fit Approach

The Chaze Fit AOP Quick-Dry Gym Shorts (₹799) use a lined construction with a mesh liner matched to the outer shell's 4-way stretch, so both layers move together rather than bunching or restricting. For the full fabric breakdown, read our 4-way stretch fabric explainer.

Related Articles

• The Complete Guide To Quick-Dry Gym Shorts In India
• Why Do Gym Shorts Chafe During Squats?
• What Is 4-Way Stretch Fabric?

Frequently Asked Questions

1. What does lined shorts mean?

Lined shorts have a built-in inner liner sewn into the shorts - usually a mesh or compression-style brief - that eliminates the need to wear separate underwear or compression shorts underneath.

2. Should I wear underwear with lined shorts?

Most people don't - the built-in liner is designed to be worn against the skin directly, functioning the way compression shorts or briefs would.

3. Are lined or unlined shorts better for the gym?

Lined shorts are generally better for training since the built-in liner reduces chafing and adds light compression without needing a separate layer.

4. Does Chaze Fit sell lined shorts?

Yes — the AOP Quick-Dry Gym Shorts have a mesh liner matched to the outer fabric's 4-way stretch.

About The Author

Ankit Mange is the founder of Chaze Fit.