These extra straps are generally on the standard jackets that are used to restrain patients and make life alot more difficult than some other 'less standard' jackets.
Another thing to bear in mind is the size of the jacket as well, if it's a size too big, escape will be easier...
I'd also like to make a point about suspended strait jacket escapes, these are HIGHLY dangerous and please get some serious advice before attempting one, as Craig Browning pointed out on another thread yesterday, lots of performers (both him and me included) have been injured when something has gone wrong... Personally I will not attempt one without a decent rigger/aerialist that I trust being present and in control of the rig I'm hanging from... Remember, things can and do go wrong and when you've got you're arms tied, plummetting head first towards the ground takes on a whole different meaning...
