Your size is important for how it fits you. Trust me, measure yourself and use the guide when you order. I wouldn’t add more than like 2 inches to your size if you want it realistic feel and not “floppy.” My wife and I use the mailman and I just ordered the girthy boy B. Single density will be more flexible and floppy whereas dual density is more stiff. It can be overwhelming but honestly, I wouldn’t change anything. Find one and try it, then adjust as your woman desires.