micoach is all you need to get the results you want.
This hoodie fits true to size, is made of high quality materials and is a great overall product. Definitely not inexpensive but if you are on the fence, go for it as this is one of the better products Adidas put out this year.
I agree 100% with WittenbergRunner, this is a very nice hoodie. I ordered size M - no issues, very comfortable and fits perfectly on me (5' 10.5", 170 pounds). I agree that it would have been nice if it had said 'qualifier' but I am very happy with the Boston Marathon logo. The stripes definitely make it stand out. I've only worn it a couple times now and already had a few people ask about it. Would recommend!
Fits true to size; high quality materials. I wish with the name being Boston Qualifier Hoodie those words were somewhere on the hoodie, but it does have the 2016 BM logo so not complaining ! Great hoodie.