jegs.com or summit.com..... Both have a full line of simpson equipment. They have the lowest prices available and shipping is sometimes free.
If you dont like the fitment just exchange it no questions asked. I have a simpson open face with the nomex lining. Been racing with it for years.
AW E90 M3... Cold, Premium, Tech, Silver Novillo, Carbon leather, ipod, EPS, Rear shade....