If your taking about website info, see link below.
http://www.dannygray.com/ist/

 

I'm talking reviews / opinions from an independent party.

 

Just got this seat and it is really really ugly. I looked for reviews but so many different opinions, but I read one where a guy had my exact bike, 2015 SGS and said why did he wait so long, so I bought it and ugg. What a disappointment. I don't like the looks or the way it feels. Shape is weird, not very wide and a hill in the middle unlike other seats, and you sit up real high over shield and far back too, I'm 6'3 but this does not help. You can see the bladder thru the mesh too. And I can't imagine what happens when it gets wet, yes I can, sopping wet a** all day. The back looks like its very comfy for passenger, it should be, its a foot thick, and ugly as hell. I'm returning it and getting Mustang deluxe, looks like they sell a lot of them. Bottom line, I would discourage anyone from this seat. I could be wrong but this makes me think Danny Gray is the Wal-mart of seats.

 

I have no experience with the IST series. I have the Long Haul XL on my Limited.

However, when I was talking to Danny last summer at Black Hills H-D he told me he has the IST seat on his personal bike. So I'd say that would be a pretty decent endorsement.

 

I've done many 700+ days on my DG Long Haul XL. This seat has the Air Hawk system in the seat.

 

I may have been a little harsh with this review, it just took me by surprise. I did ride with it and it's pretty comfy. The review is still accurate, bladder showing and kinda funky looking seat, but i had to say it does work pretty good. I'm gonna keep it until I get the Mustang seat, then make a comparison, stay tuned.

 

you have 30 days to send it back, I think.
I have two older bikes with some of his original styles and a Low'ist on the RG.
May not be the "most" comfortable but I wanted comfy & low profile which is exactly what they delivered. Would like to try the airhawk but the 'ist is a good platform set up with holes in the pan like suspension seats used in off-road cars

 

Well, I bought both of the best seats, and the winner is...The Danny Gray. For a number of reasons. It's comfortable, it doesn't look bad at all now, not good as stock but the stock seat just isn't comfy. The Mustang was comfortable also but big as a barn and also sat you about 2" up, in the wind, but nice on the knees.
The D.G. has the mesh though which works well, as does the air up padding. They both sit you back a bit, further back on DG. Better passenger seat on DG too, though I don't carry any unnecessary cargo personally.. It was a very tough choice, they are both good so probably just a personal taste thing. Anyway, just wanted to follow up and leave a helpful review for people like me that can't decide, I tried them both.