WTF good is a chin guard the helmet needs to protect your dome. Sorry but this sounds like yet another one of the lame ass companies making a lame ass product. You need a foam in there not air. A bladder is just going to pop when you impact and when it does you'll get a double impact and your brain is going to get mashed twice as hard. I've been doing this a long time and the best helmets on the market are seriously Burton/Red, Protect, Smith, Poc, Boerri and thats about it.