Jack Adams Model String Thong in ocean depths (profile view) - men&
Jack Adams Model String Thong in international blue - men&
Jack Adams Model String Thong in white - men&
Jack Adams Model String Thong in barritone blue - men&
Jack Adams Model String Thong in marmalade - men&
Jack Adams Model String Thong in viva magenta - men&
Shirtless man standing in front of a white background wearing a pair of Jack Adams Modal String Thong in beetroot purple (profile view)
Jack Adams Model String Thong in ibiza blue - men&
Jack Adams Model String Thong in green cyan - men&
Shirtless man standing in front of a white background wearing a pair of Jack Adams Modal String Thong in deep blue (profile view)
Jack Adams Model String Thong in nude -men&
Jack Adams Model String Thong in abundant green - men&
Shirtless man standing in front of a white background wearing a pair of Jack Adams Modal String Thong in lava falls (profile view)
Jack Adams Model String Thong in sky blue - men&
Jack Adams Model String Thong in Innuendo (pink) - men&
Shirtless man standing in front of a white background wearing a pair of Jack Adams Modal String Thong in deep mahogany (profile view)
Jack Adams Model String Thong in heather grey -men&
Jack Adams Model String Thong in black - men&
Jack Adams Model String Thong in chicory (profile view) - men&
Jack Adams Model String Thong in rain forrest - men&
Man standing wearing a pair of Jack Adams orange Modal Bikini String Thong (profile view) on a white background.
Shirtless man standing in front of a white background wearing a pair of Jack Adams Modal String Thong in international blue (profile view)
Shirtless man standing in front of a white background wearing a pair of Jack Adams Modal String Thong in white (profile view)
Shirtless man standing in front of a white background wearing a pair of Jack Adams Modal String Thong in cedar (profile view)
Man standing wearing a pair of Jack Adams cedar Modal Bikini String Thong (profile view) on a white background.
Jack Adams Model String Thong in rain forrest - men&

Modal String Thong

Sale price$38.00
/
Shipping calculated at checkout.

Size
Color
  • Low stock - 9 items left
  • Backordered, shipping soon

Slip into a thong designed to work as good as it feels. This best selling Modal String Thong is cut with a low-rise, minimal silhouette that stays put, moves with you, and disappears under anything. The contoured front offers a secure, sculpted fit, while the ultra fine modal delivers that buttery, weightless feel men keep coming back for.

It's breathable, supportive, and shockingly comfortable—ideal for guys who want freedom of movement without extra fabric bunching or showing. Once you experience how smooth it feels and how clean your clothes look over it, you'll understand why so many men make this their everyday go to. Shop the Collection.

SIZE - True to size
  • Thong underwear.
  • High leg cut.
  • Low rise cut, falling below the natural waistline.
  • No fly.
  • Contoured pouch.
  • Breathable lightweight micro-modal that stays cool, feels ultra-soft, and is comfortable for all day wear.
  • Natural wicking fabric, keeping you dry and cool throughout the day.
  • Layered elastic waistband with self-covered fabric.
  • Size: Model is 6’ 1” and is wearing a size medium.
  • Fabric: 95% Modal, 5% Elastane
  • Shrinkage and pilling resist.
  • Machine wash cold water. Do not bleach. Hang to dry.

Get free shipping for US orders over $125+

Discreet packaging: plain poly bag or brown box.

-Shipping Details

This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.

Jack Adams™ underwear and shorts/pants sizing is measured at the waist. To find your correct waist size, measure your torso about one inch below the belly button. To find your size in all of our tops and hoodies, measure your chest around, at approximately one inch below your arm pit. 

Size Chart - INCHES

SIZES (inches) S M L XL XXL 
CHEST 35-37 38-40 41-43 44-47 N/A
NECK 14-14.5 15-15.5 16-16.5 17-17.5 N/A
WAIST 27-29 30-32 33-35 36-38 38-43

 Size Chart - METRIC

SIZES (cm) S M L XL XXL 
CHEST 89-94 97-101 104-109 112-118 N/A
NECK 36-37 38-39 41-42 43-44 N/A
WAIST 69-73 76-81 84-89 91-97 97-109

 

 

  • 5 stars: 50 (96%)
  • 4 stars: 1 (2%)
  • 3 stars: 1 (2%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
A
Anonymous

Very comfortable. The front pouch is supportive without being constricting and the back is thin enough it is not even noticeable.

A
Anonymous

super comfy g-string. I own 2 colours now but it will be more in future as it feels great on the skin and fits perfect.

Thank you for your wonderful review! We're delighted to hear that you find the Modal String Thong so comfortable and perfect fit. We look forward to serving you more in the future.

R
Richard Chase

Most comfortable brand I own, and I have many different brands

Thank you, Richard! We're delighted to hear the Modal String Thong is your most comfortable choice. We appreciate your support and look forward to serving you again.

A
Anonymous

Simply the best thong out there wear all the time like wearing nothing great feel on the boys

Thank you for your fantastic review! We're delighted to hear you love the Modal String Thong and enjoy wearing it so comfortably. We appreciate your support!

T
Tim Yates

The fabric is light and soft. Feels great on the skin. The waistband is my favorite. Very comfortable. The waist was big on me. I wear an XL in all other Jack Adams clothing, except these. I would definitely recommend these if you get the sizing right.

Hi Tim, thanks for the detailed feedback! We're glad you love the fabric and waistband. We'll take your sizing note into account. Thanks for recommending us!

E
Eric A
Modal String Thongs Are The Best!

Been searching lately for some Thong underwear and stumbled across Jack Adam's thongs! Let me tell you these things are more comfortable than I could have ever imagined. Truly the most comfortable underwear I have ever wore!! Bought a pair to try and now have 5 pairs! Will forsure be a returning customer.

Thank you for your wonderful review! We're delighted to hear you're enjoying the Modal String Thongs and appreciate your continued support. Looking forward to serving you again!

M
Michael S.
Modal string thong!

Recently been switching from boxer briefs to thongs. Like others, I’ve tried the usual suspects, but haven’t found ‘the one’ until now. The waistband is the perfect size and the overall fit is excellent. This thong gives great support without the bulk. Can we talk about shipping? My order was a great experience from start to finish. Great customer service and quick delivery! I’m a huge fan!

K
Kerry
Great comfort feel

Never thought I would be reviewing something like this but they are so comfortable and we'll fit you hardly know you have them on. I wish I had purchased them in large instead of XL as im right at the cross over line. Did get one in large and can't say enough so well fit keeps them free yet contained. Highly recommend.

C
Customer
The New Go To!

Sleek and light but also absorbent. Looks great!

M
Michael A.
This is the best thong for Men hands down I have wore Calvin Klein Jockey Male Power nothing comp...

Love these simply the best soft

M
Michael A.
Modal string Thong

I Have wore many thongs these are the best of the best try them you will love them like wearing nothing

D
Dan
Best

Best string thong on the market, feels like nothing is there.

M
Michael A.
Best underwear ever still wearing have purchased 3 more pair

Once you try you will be hooked I’m 68 yrs old didn’t think I would wear a thong bought it mainly to sleep in now wear all the time I work outside a lot they are cool and like wearing nothing best ever

M
Michael A.
Modal String Thong

Best thong I have ever wore hands down

M
Michael A.
Modal string Thong

Best Thong out there like wearing nothing after you try you will be hooked

G
Greg J
Modal String Thong

The Modal String Thong is the best choice for that I’m wearing nothing all feeling but with great support where you need it.

B
Bill M
Modal String Thong

An awesome thong, great fabric with a good feel!

B
Bill
Awesome Modal String Thong

These thongs have great fabric, are very comfortable and look attractive!

A
Alex
Sexy, comfortable + great colors

Bought these as a gift. They’re sexy on and very comfortable from what I’ve been told. The colors are great too, not your typical colors, richer/deeper shades. Bought him 3-4 pair, very happy!

R
R
Very Comfortable

I followed other reviewers suggestions and sized down to a small. I’m 5’10”, 170lbs, 32” waist. It fits perfectly and often I can’t remember I’m wearing it.

D
Dan
Feels amazing

Can’t even feel it’s there yet it is very supportive for the boys.

F
Frederick Z
Most comfortable

This thong is so comfortable. I could easily wear everyday. However, like at least one other reviewer I find the thong in the back a bit long, I would like a shorter "string" for the waist band to sit a little lower on my back to be a little more discreet. I would also prefer a little more frontal coverage like the Jack Adams Bikini thong, but this is more comfortable overall. I am 5'10, 160lbs, normally wear a size 31-32 pants and purchased a size medium in Oct-2023, but I think if I ordered again I would try a size small.

B
Brian Talbot
Modal String Thong

Most comfortable men’s underwear I’ve ever worn.

c
chris allen
Wow!

One of the most comfortable thongs I’ve worn!

G
Gerry
modal string thong

I have changed all my underwear to thongs, love the comfort they provide, The Jack Adams string thong and the bikini thong are my favorite ones. They look great, the material is so soft and they are very comfortable. Would highly recommend them

D
Dan
Great Thong

I absolutely love these and best part is that you can’t even feel them.

D
Dan
These are my favorite

Feels great and very comfortable. Absolutely love these and can’t even feel them.

B
BTDavis
Comfortable times 2!

I was not sure about these at first due to their minimal nature. I decided to give them a try and was very surprised at the comfort especially in the hot weather. I normally wear an XL in other JA products but went a size down to a large in these and they are a perfect fit. Give them a try. You’ll be surprised and happy you did.

M
Mike
Solid G String Contender

Great string thong. Straight guy who’s been wearing g strings and thongs for many years and these are some of the best. Material gives and holds your junk nicely. Balls don’t spill out of the sides of the pouch. Can’t even feel the string up your butt. Very comfortable. Will buy more.

M
Mike
Best G-String Thong I own!

I own countless thongs and wear thongs daily. It is really hard to find a real true string thong but here it is! This is the first true g-string thong I own and it is absolutely amazing! The pouch is perfect and the string is so thin you literally feel like you aren’t wearing anything! Great under scrubs for work! Super soft, comfortable amazing colors! I ended up buying a total of 10 I like them so much!

D
David Davis
Excellent

The best, extremely comfortable….have ordered many!

F
Forrest K.
Pleasantly surprised by the comfort!

I could barely tell these were on! The stigma around thong underwear is there's a string up your butt; these lifted that for me and are now my 'go to' under tight pants. They are comfortable and keep everything together up front.