Possible to Strech a Leather Suit or Jacket?
 

Found a used Teknic one piece leather suit but the fit is just a little snug across the shoulders and chest. Is it possible to do a little streching of the leather for a better fit? I could probably get by with it as is but would also like to wear armor underneath and without more room it won't work. Thanks

A suit really will only stretch when its warm. Hang it out in the sun & then put it on & stretch around in it...w/ back protector. That's about all you're going to get. When I'm at the track, I hang my suit in the sun to let the sun warm it up. Makes it much easier to put on.

Find out who does leather work in your area, preferably having experience w/ leather motorcycle gear, & have the suit altered as necessary.

There's a favored leather shop in my area where riders routinely take gear/suits to have altered to fit, damage repaired, etc. To a true leather working professional, its not a big deal to make necessary alterations. You pay for leather & labor. You just have to decide if the cost is cost-effective vs buying a better fitting suit.

Good luck.

Good info, thanks.