Visually, India's langot loincloth is a cousin of the rokushaku fundoshi, but the similarity mostly ends there. The ties that secure the langot around the wasit make it more similar to the relaxed fit of the etchu fundoshi. As we'll see, the langot is a robust garment designed with athleticism in mind:
If you would like to find more photos of amazing quality like these, I recommend searching flickr.com for the works of the photographers sampled above and many others. The rich oranges and reds of the langots, the red clay dust, and the toasted brown skins of the wrestlers all dance together in the ancient masculine art form known alternately as kushti or pehlwani.
You can learn a lot more about kushti at this great blog dedicated to it: http://kushtiwrestling.blogspot.com/
(...and if you're interested, I posted about langots once before, and I can't wait to post about them again sometime soon!)