Not sure if my gc2b binder is too small

[mikeydoodledandy]

I'm still pretty new to binding and just got my first binder from gc2b since I heard they were a good company. This is my first binder like this and I'm not sure if it fits right because while I'm a Medium by their measurement standards, my chest is huge (36DDDD) compared to the rest of me. I got the half binder and everything about it feels amazing except that it rides up on my chest and I constantly have to fix it which causes chaffing under my arms from moving it so much. It makes me the flattest I've ever been, is really comfy and breathable and I can get in and out of it easily. What I want to know is, does it riding up mean I need a larger size or just the full tank? Does anyone else have experience with this?

[mm]

Guys with large chesticles have problems with binders riding up, may need a longer binder to hold it down.  It is good that you are flat and can be comfortable and breath alright.

[Elis]

As long as you can breath alright and get it on and off ok then it's the right size IMO. If you get a bigger size it won't flatten you nearly as well, from my own experience with this company.  As the other guy said it probably is bcos you're bigger chested. Congrats on the flat chest btw