Snowboard question if im size 8.5 in a mens shoe what size burton binding should i get?

if you think you might grow to around a size 11 bye next season get a Large, bindings are not cheap, and no sense in buying them 2 years in a row. HOWEVER, if the bindings you are getting a have a cap strap (cap strap= toe strap that hugs thee toes...like a cap) eg. Burton custom, mission, cartel...... then go with the MED. because the cap wont fit over your boot if the bindings are too big. but your best bet is not to listen to us, but to take your boot to the store and slap it in a pair of bindings and find out for yourself!

if your foot isnt growing any more, get a medium. if it is growing, get a large. you are like right in between med. and large

medium!

I had the same size shoe as you a couple years ago and your best bet would be medium bindings. i used my mediums all the way up to size 9.5 and i had the same ones for two years. now i have large bindings for my 10.5-11 boots. good luck, and large bindings aren't 9+, the are 10+