A thong, a G-string and a T-back all have a front pouch and very little fabric at the back, but they differ in how much. A thong has a narrow strip of fabric at the back, a G-string swaps that strip for a thin cord, and a T-back is a thong whose back strip meets the waistband in a clear "T" shape. If you are new to minimal cuts, a T-back or classic thong is the easiest place to start.
Thong, G-string, T-back: the short version
The three names are often used as if they mean the same thing, and in shops they overlap a lot. The real difference sits behind you: how wide the rear strip is and how it joins the waistband.
- Thong: the umbrella term. A front pouch, a waistband and a narrow fabric strip that runs between the cheeks.
- G-string: the most minimal version. The back is reduced to a cord or very thin band, so there is almost no fabric behind.
- T-back: a thong where the rear strip rises straight up and joins the waistband in a "T". It usually looks clean and structured from behind.
Want the bigger picture on why men choose thongs in the first place? Read our guide to comfortable men's thongs.
Side-by-side comparison
| Feature | Thong | G-string | T-back |
|---|---|---|---|
| Back coverage | Narrow fabric strip | Cord or very thin band | Narrow strip joined in a "T" |
| How it feels | Balanced, familiar | Barely there | Secure and stable |
| Lines under clothes | Very few | Almost none | Very few |
| Good for beginners | Yes | Better as a second step | Yes |
| Best for | Everyday wear, fitted trousers | Date nights, beach, minimal look | All-day wear, training, going out |
The thong: the all-rounder
A classic thong keeps a proper strip of fabric at the back, so it feels closer to a brief than you might expect. That makes it the most common choice for everyday wear under slim chinos, suit trousers or gym tights, where you want smooth lines without thinking about it.
- Look for a pouch with enough room, so the front feels supported rather than squeezed.
- A wider waistband helps the thong stay in place and spreads pressure around your hips.
- Soft, stretchy fabrics move with you; cotton blends feel familiar if you usually wear cotton briefs.
Our Cotton Pouch Thong is made from 95% cotton and 5% spandex, with a 3D pouch, a tagless build and a wide elastic waistband with a sleek T-back. It comes in six colours, sizes S to 2XL.
The G-string: minimal and lightweight
A G-string takes the thong idea as far as it goes. With only a cord or thin band at the back, it is the lightest option and leaves nothing to show through even the thinnest trousers or swim shorts. Some men love that barely-there feeling right away; others find it takes a few wears to get used to.
- Choose your true size. Too small and the back pulls; too big and the pouch loses its shape.
- A G-string with a wider front waistband feels more secure than one with a string all the way around.
- Save it for occasions where minimal coverage matters most: date nights, holidays or under light linen.
The Arjen Kroos Cotton G-String Thong is made from thin, lightweight cotton with a tagless finish, a widened logo waistband and a 3D pouch. Colours are grey, white, black, yellow and red, in sizes M to XXL.
The T-back: structured and secure
On a T-back, the rear strip runs straight up and meets the waistband at a clear junction, forming a "T". That shape keeps the waistband level at the back, so the fit stays put when you sit, bend or train. It is a great first thong for men who like a secure, locked-in feel.
The Low Rise T-Back Thong is 87% polyamide and 13% spandex, with a wide belt, a contour pouch and a tag-free design, in six colours and sizes S to XXL. Want even more support? The T-Back Jock Pouch Thong combines a lifting jock pouch with a bare T-back and a wide elastic waistband, in 90% polyamide and 10% spandex, seven colours and sizes S to XXL. If you like that idea, our jockstrap guide explains how jock-style pouches fit.
How to choose the right one for you
- First time? Start with a T-back or classic thong in a soft, stretchy fabric.
- Tight trousers or suits? Any of the three works; a thong or T-back gives the best balance of comfort and smooth lines.
- Gym or active days? A T-back with a wide waistband stays in place best. See our gym underwear guide for more.
- Date night or holiday? A G-string or low-rise pouch thong gives the most minimal look.
- Between sizes? Check the size chart on each product page and our underwear size guide.
Browse every style in our men's thongs collection, or explore low-rise underwear and pouch underwear for more minimal cuts.
Shop this guide
Frequently asked questions
Is a G-string the same as a thong?
A G-string is a type of thong. Both leave the seat bare, but a G-string replaces the rear fabric strip with a cord or very thin band, so it has even less coverage.
What does T-back mean in men's underwear?
T-back describes a thong whose rear strip meets the waistband in a "T" shape. Many brands use "thong" and "T-back" for the same cut; the T-back name simply points to that clean back junction.
Are men's thongs comfortable for all-day wear?
Yes, once you find the right size and fabric. Most men get used to the feel within a few wears. Soft stretch fabrics, a roomy pouch and a wide waistband make the biggest difference.
Should I size up or down in a thong?
Wear your usual waist size. A thong that is too small pulls at the back, while one that is too big lets the pouch and strip shift. Check the size chart on each product page.
Can I wear a thong to the gym?
Many men do. A T-back with a wide elastic waistband stays in place well during squats and cardio, and there are no leg bands to ride up.
Find your favourite minimal cut
Whether you go for a classic thong, a barely-there G-string or a secure T-back, the right one is the one you forget you are wearing. Explore the full range in our men's thongs collection. Every order ships in discreet packaging.
