Does your helmet fit over it? If it's so loose that your helmet and chin strap are too tight, then I'd suggest that it's too big.
I have a PI balaclava that fits snugly. I don't end to wear it unless it's below 25 or so because I do overheat with it otherwise. Perhaps I'd be better off with a looser one.
Live with intention. Walk to the edge. Listen hard. Practice wellness. Play with abandon. Laugh. Choose with no regret. Continue to learn. Appreciate your friends. Do what you love. Live as if this is all there is.
--Mary Anne Radmacher