Very comfortable thong. Love the y-back design. Wish the waist band was a little thinner like the 2xist y-back, but still a must have. Nick from Minneapolis, MN

• Body Type: Height 6'0" and over
• Age: 20's
• Posted: December, 2012

I love workingout in the C-in2 core thong underware at home and at the gym. Even though I workout in the nude usually. They feel so comfortable that I forget I'm wearing them.The cotton/spandex material really clings to the shape of your body.The elastic Y-shape in the back is very brilliant design. David from Alexandria,Virginia

• Body Type: Height 5'6"-5'11"
• Age: 30's
• Posted: June, 2012

This is an amazing thong, the pouch isn't too big and not too small either. However, I sometimes feel the thong and it can be a little uncomfortable, however it is bearable and it still hides itself. The Y back is a great feature, it stretches when you move, instead of the waist strap moving. All in all this is a great thong, looks good and feels good, plus all the girls I've shown it to love it. Michael from Miami, Fl, USA

• Body Type: Height 5'6"-5'11"
• Age: 20's
• Posted: October, 2011

The size for my waist was a bit too big. Just the same they fit well.. they just pulled a bit too high. I compared this with the 2xist y-back & found these almost felt like a cross between a thong & a jock strap. Maybe had i gotten the right size they would've felt better, but found even a size too big I preferred how the 2xist felt. My preference aside I'd still recommend others try this. Adam from KS

• Body Type: Height 6'0" and over
• Age: 30's
• Posted: September, 2011

I was looking to add a Y-back to my steadily growing thong portfolio and chose the C-in2. I'm not entirely sold on the garment. The fabric and construction are first rate, and I like the weight. Although the two top arms of the Y are unnoticeable in wear and pretty sexy looking, I find the thin elastic strap at the bottom of the Y tends to seek out parts you would rather it didn't. I'd love C-in2 to make this same garment in a traditional thong cut, and they would not be able to keep them on the shelf. Tim from Baltimore

• Body Type: Height 6'0" and over
• Age: 40's
• Posted: March, 2010

I really love my new underwear. Thanks to this website I can choose from a variety of styles of underwear now, but one of my c-in2 strap is beginning to unstitch and I did purchase the right size of underwear for me ,but now I have to stitch it up again I hope that is the only problem with this underwear brand. ismaldo campos from chicago, il u.s.a

• Body Type: Height 5'6"-5'11"
• Age: 30's
• Posted: November, 2009

The only issue I have with this Y-back is that the pouch is just a little too small. Vincent from Pittsburgh,Pa, USA

• Body Type: Height 5'6"-5'11"
• Age: 40's
• Posted: August, 2009

I absolutely love this underwear. The Y-back feature is extremely comfortable. It feels like I am wearing nothing at all. My only complaint is front puch fabric is a little thin. However, it does kind of add some sexiness to it. Overall, this is one of the best thongs I have ever worn. Jessup from Los Angeles

• Body Type: Height 5'5" and under
• Age: 20's
• Posted: July, 2009

This is actually quite comfortable and is a good product. This is great to wear with polyester athletic shorts during activity or just hanging around during summer. The thong strap is flat and thin, and stretches and is much better than those feminine styles. An improvement on the 2xist style. The C-in2 should become a standard, and is both functional and fun to wear. I wouldn't want to wear a thong all the time, but this is a good option for in shape guys who want some variety, like quality, and are not worried about hangups. T from Ohio

• Body Type: Height 5'6"-5'11"
• Age: 30's
• Posted: June, 2009