Just make sure the helmet is certified. Either ASTM F2040 (U.S.) or CE EN1077 (E.U.). If it's not certified refuse to buy the helmet. It's protection is questionable.
Try the helmet with your goggles for proper fit too. If the helmet doesn't fit it won't protect your head well or be uncomfortable. If your goggles don't fit you'll get moisture in your goggles and possibly steam up.