MIRROR: Download from MEGA
Can't advise on that one I'm afraid but as someone who owns a straightjacket and spent a bit of time in it at some point, I figured I'd pitch my thoughts.
For a start, you being in America is a good start. Finsing a British straightjacket retailer was a mission and the import fees that I eventually settled for were criminal.
The jacket I got is a black canvas job with front loop and double crotch-straps. Being male and having a slightly obsessive nature for symetry, I felt the double straps were essential. The front loop is also nice to have for additional security. You know that unless you're some kind of freak, you won't be slipping into an escapable position at any time.
The canvas is heavy, but that's half the fun of being in it. It just doesn;t give, once the straps buckle up tight, there's no chance of wriggling out. With a rubber jacket, there's going to be some stretch there and that would take something out the experience. Of course, it depends largely on why you want the straightjacket and how much you really want from a bondage scenario. For me, it was always having absolutely zero-control over any situation and no escape.
Leather looks like fun, but might get a bit too hot inside, also horribly expensive so I guess that won't be an issue here. The second link you provided looked a bit more promising with good sturdy jackets but there's a lot fo options.
My advice...
Canvas - Straps and buckles - Double crotch straps (especially if going on a male) - Front arm loop.
Enjoy it. Being in mine was the most amazing experience I had. Gutted it'll never happen again. Make the most of it!
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