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: 67 (94%)
- 4 stars: 4 (6%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 star: 0 (0%)
Great fit, comfortable material, and nice style.
Never was a fan of thongs before but this was super comfortable and loved the fabric. Will be getting more for sure.
Hi Stefan! We're thrilled to hear you love the Modal Bikini Thong and find it so comfortable. Thanks for your support!
Great fit and feel.
Hi David, we're so glad you love the fit and feel of the Modal Bikini Thong! Thanks for your positive review!
Great weight and feel.
Hi Kevin, we're so glad you love the weight and feel of the Modal Bikini Thong! Thanks for sharing your experience.
Very nice everyday thong. soft fabric a lot of nice colours. if you don't know what to wear - just grab them from your drawer
Thanks for your kind words! We're glad you love the colors and softness.
I’ve probably bought 400+ thongs over the last few years and these are hands down the most comfortable I’ve ever come across. Probably won’t buy anything else from here on, they’re perfect
Thank you for your fantastic review! We're thrilled to hear our Modal Bikini Thong is your favorite. Also try the Unbound Thongs as well, you will loved them as well. Again, thank you. -Jack
The thongs are very comfortable, excellent fabric to wear all day.
Hi there! We're so glad to hear you find our Modal Bikini Thong comfortable and perfect for all-day wear. Thanks for sharing your positive experience!
The Jack Adams Modal Bikini Thong is incredibly soft and fits like a dream. The contour pouch gives great support, and the low-rise cut looks sharp. Perfect under slim pants with no bunching, no discomfort. Total game-changer!
Perfect fit for all day comfort no matter what I am doing or wearing. Like the sleek bikini thong cut and so many color options to choose from!
Wife loves the way they look on me. Amazing support and love the style. More men need to wear thongs.
Best underwear I have owned. Extremely comfortable.
very comfortable and fitting
Love these also as much as Moal string like wearing nothing Jack Adams are now my favorite Thongs
I’m 5’10”, 170lbs, got a medium and it fits great. Feels comfortable and soft.
Love this style. I have many of this style and color. Some of my favorites - and I have many other brands and cuts.
The fit and feel of the fabric is great, holding everything comfortably.
The fit and fabric of the thong are very comfortable!
Definitely some of my favorites, and I have many other styles and brands. I have several in different colors (yellow, purple, pink). When I need more, I'll make these a priority. Very comfortable, and they look great.
I purchased the Bikini Thong last month and once it arrived, I immediately fell in love with it. The lightweight material is incredibly comfortable and I love the way this thong sits on my body. It looks sporty and stylish and it highlights my physique in a masculine way. I wear thongs nearly every day and when I wore the bikini thong for my wife, she immediately commented on how sexy she thought I looked. I've since ordered five more of these thongs, which I expect will be a regular part of my underwear rotation. I highly recommend the Jack Adams Bikini Thong!
I own almost every color of the bikini thong style and I keep coming back to purchase new colors as they're released. I can never have too many! For this style of thong, Jack Adams is simply the best I have ever tried and I've tried many brands. Jack Adams has perfected the bikini in general, including this thong. Do yourself a favor and buy as many as you can. Your body will thank you! The fabric is so soft with a bit of stretch but fully supportive. The pouch is by far the most comfortable for me personally. Every time I slip into a pair I'm surprised how well it enhances everything and leaves me feeling confident and sexy. I love them and my wallet will always be open for Jack
Been wearing these for a few years now and they're literally the most comfortable underwear I've ever worn. I've thrown all my other underwear away, there's no point in keeping it around.
Love the way they fit and feel
This is hands down the best underwear. Not sure thongs are for you? Buy these and you'll be forever converted.
Super comfortable (like wearing nothing), keeps your business in check (no more sweaty balls sticking to your leg), sexy ass hell, and the benefits don't stop there. If you're like me and have a gigantic ass that doesn't like to be contained (most underwear simply doesn't fit over my backside), then thongs are for you. Just let that ass be free.
Great product!! Really shows off your junk, and very comfortable
I had never tried a thong but needed to get one for my yoga class. I was skeptical and nervous about getting a thong, but the customer service team recommended the bikini thong as a starter for this style. I went with their recommendation and glad I did. The style is remarkably fantastic for yoga - the freedom of movement that it offers is awesome. It provides great support, freedom of movment, and nice cooling for yoga. I plan to try it out for my other gym workouts as well.
Need I say more? I have a pair in almost every color. The best on the market!
Great Thong, I really like the overall fit, it is pretty comfortable. I do find the back strap a little bulky and not the smoothest due to the stitching. My wife really likes when I wear this one. if Jack Adams is listening I would prefer a thong with this styling in front but the modal string thong in the rear. This is still a great everyday thong. I am 5'10 160lbs normally wear size 31-32 pants and purchased a size medium in the fulcrum blue.
Just recently purchased these thongs and I’m very satisfied with the fit and comfort! Excellent support for the package and its like you are not wearing anything at all!
I’ve reviewed these before. Simply put they are the best, most comfortable thongs on the market. Hands down the best.
these thongs are perfect !
I am wearing the thong as I write this review, though it feels as if I'm wearing nothing! This is the most comfortable thong I own.
I really enjoy wearing thongs. At first I was a little skeptical because of the whole stereotype that men shouldn't be wearing anything outside of boxers, or the original white briefs that are made for nerds and dorks.
I wear thongs everyday, and I'm comfortable with that.