Modal vs Cotton vs Mesh: Which G-String Material Is Best for Men?

You've decided to try a g-string for men. Now comes the second question: what fabric should you choose? 

The material of your men's g-string underwear affects everything — how it feels against your skin, how long it lasts, how it breathes, and how it fits under different types of clothing. Choosing the wrong fabric can make your first g-string experience uncomfortable. Choosing the right one makes you wonder why you didn't switch sooner.

This guide breaks down the three most common materials for g-strings for men — modal, cotton, and mesh — so you can pick the best material for g-string comfort based on your lifestyle.

The Quick Comparison

Modal G-Strings: The Premium Choice

Modal is a semi-synthetic fabric made from beech tree pulp. It's increasingly popular in premium underwear for a simple reason: it feels like silk but wears like cotton.

Why choose a modal g-string:

• Ultra-soft texture — Modal is significantly softer than cotton, with a smooth, almost silky feel against the skin
• Superior breathability — Modal is 50% more absorbent than cotton, making it ideal for all-day wear in any climate
• 4-way stretch — Modal fabric moves with your body without losing its shape. This makes it the most forgiving fabric for first-time g-string for men wearers
• Resists shrinking — Unlike cotton, modal maintains its size wash after wash
• Eco-friendly — Modal is biodegradable and produced from sustainable beechwood forests

If you have sensitive skin or plan to wear your g-string underwear for extended periods (8+ hours), modal is worth the premium. (Modal g-strings are coming soon to our collection — sign up for our email list to be notified.)

Cotton G-Strings: The Everyday Classic

Cotton is the most common fabric in men's underwear for a reason — it's natural, breathable, and familiar. A cotton g-string is the safest choice for first-time buyers.

Why choose a cotton g-string:

• Natural feel — If you're used to cotton briefs or boxers, a g-string for men in cotton will feel the most familiar
• Affordable — Cotton g-strings are typically the most budget-friendly option, starting at $4.90 at Undies for Men
• Easy care — Cotton washes well and doesn't require special handling (though air drying is still recommended)
• Hypoallergenic — Natural cotton fibers are less likely to cause skin irritation than synthetics

Our top cotton pick: The Classic G-String Thong by DomiGe is available in 95% cotton and is our best-selling starter g-string. It's the perfect first purchase if you're not sure which fabric you'll prefer.

Mesh / Nylon G-Strings: The Performance Option

Mesh g-strings are made from nylon or polyester blends with an open-weave construction. They're designed for performance — drying quickly, breathing well, and feeling weightless.

Why choose a mesh g-string:

• Quick-dry — Mesh fabric dries in minutes, making it ideal for gym wear, hot climates, and travel
• Weightless feel — Mesh g-strings are lighter than cotton and modal, so you may forget you're wearing one
• See-through design — The mesh construction adds a visual edge that works under sheer clothing or as a statement piece
• No shrinking — Nylon and polyester don't shrink in the wash, so sizing stays consistent

Our top mesh pick: The Mesh G-String Thong by DomiGe combines breathable nylon mesh with a comfortable wide waistband — perfect for workouts, summer days, and clubwear.

Which Material Should You Choose?

Choose Modal If…

• You have sensitive skin
• You want the softest possible feel
• You plan to wear your g-string for men for 8+ hours at a time
• You're willing to spend a bit more for premium comfort
• You want a fabric that drapes smoothly under tailored clothing

Choose Cotton If…

• You're buying your first g-string for guys
• You prefer natural fibers over synthetics
• You want the most affordable option
• You need a versatile daily-wear g-string that works for most situations
• You're not sure which fabric you'll like — start here

Choose Mesh If…

• You live in a hot or humid climate
• You want a g-string for gym workouts or active days
• You like the look of sheer or see-through underwear
• You travel frequently and need quick-dry fabrics
• You already own cotton g-strings and want something different

Can You Mix and Match?

Absolutely. Many men keep all three fabrics in rotation:

• Cotton g-string for daily office wear under dress pants
• Mesh g-string for gym sessions and hot weekends
• Modal g-string for all-day comfort during travel or long events

Each fabric serves a different purpose. Having options means you're never stuck with the wrong material for the occasion.

The Bottom Line

There's no single best material for g-string — it depends on how and when you plan to wear it. Cotton is the safest starting point. Mesh is the best performance choice. Modal is the ultimate comfort upgrade.

The best way to find your preference is to try one of each. With our g-strings starting at just $4.90, you can build a three-fabric wardrobe for under $20.

Browse our full men's g-string collection and find your perfect material match. Every order ships in discreet, unmarked packaging — your privacy is guaranteed.

— The Undies for Men Team