What width is the wide fit for this saddle? - Circle Y 1300 Tree Free Cloud Peak Trail Saddle

Standard interior doors are 28" while exterior doors are generally 36" wide. It is paramount to consider that a mobility scooter that is compatible with this size considering is most of the best mobility scooters are 27" wide, which makes for a tight fit unless you have plan it appropriately. Width Between Arms 20" - 22.5"

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any multi fit blade
it is only the shank width that may be a problem as some are too wide to fit in the slot

The body position on a tri bike is cruicial not only for aerodynamics, but for comfort as well. The saddle is the usual "sore" spot for most riders who try to find a more aero tuck. Unfortunately, there is no magic saddle that takes care of everyone's problems. Human physiology differs from person to person and saddles need to fit a wide range of riders. My advice would to try to find a bicycle shop with a saddle rental program, this will allow you to test ride a saddle before purchasing one. Also, do some research on the various saddles out there. I had to try six different saddles before settling on one that is perfect. Here are some links to saddle manufacturers:
Triathlon Bike Saddle For Men amp Women Koobi PRS TRI T1 Welcome Innovative SaddleMaker Products

There are different men's and women's saddles. In general, men's pelvic structures are narrower than women's pelvic structures. (It has to do with birthing kids.) Thus, men's saddles are generally narrower than women's. A comfy saddle is the one that is right for your pelvis.

I particularly like Specialized saddles. They make saddles in a variety of widths for men and women. Along with their saddles, they also have a fitting system that uses a gel pad. You sit on the pad, then you measure the width of the depressions made by your pelvis. Then you buy the appropriate saddle.
I had a lot of trouble with pain and numbness prior to getting a Specialized saddle. When I did the measuring, I found I had a very narrow pelvic structure. (My kids have always said I was a tight a**, but I think we are talking about two different issues.)
Hope you find a saddle that fits you well.

The front hubs have the same part number, but the rims are a little different the 1989 is 1.6 inches wide and the 1990 is 1.85 wide. The only problem may be a clearance issue with the width of the rim, other than that it will fit.

Width is the measurement across the widest part of your forefoot.This measurement runs in correlation to the length of your foot, and can best be found by having you foot properly measured. The average men's width, typically referred to as medium, is a men's D width. For women, the average, or medium, is a B. Listed below is a chart that helps indicate the width markings and their meanings.
Women's Widths .
4A -Extra
2A-Narrow
B- Medium
D-Wide
2E-Extra Wide 4E-Extra Extra Wide. Men's Widths - 2A -Extra Narrow. B-Narrow. D- Medium.2E-Wide. 4E -Extra Wide.6E- Extra Extra Wide.

The saddle itself is quite well made and should last a good while with proper care and maintenance. However, three things concern me and one is that it is a saddle you are used to using. If you are used to the support of a western saddle and move to a close contact, it may be very uncomfortale until you get used to it. The second is that the horse you use it on is used to being under a close contact saddle. The third and most important is that you indicate that you ride ' all different horses and ponies '. You do not clarify if you are wishing to use one saddle on all. I do hope not as saddles are not one size fits all. The saddle must be fitted to your 'seat' and the tree width and rise must properly fit the size and shape of the horses back. If you are unfamiliar with this, I suggest you learn how to fit a saddle before buying anything.

8 or Smaller Board Width 24cm or less (Narrow) 8.5 - 10.5 Board Width 24 - 26cm (Regular) 10.5 or Larger Board Width 26cm or More (Wide)