Simpson M30 Smoke Shield This is a shield, not a helmet. It's good during the day, but I stopped using it because it's hard to see at night. I think people can't see your face from the outside during the day. I took a picture with my face towards the sun. Please check it. There are no bolts or attachments for attaching it to the helmet. I haven't used it much, but there are some minor scratches. Please refrain from purchasing if you are concerned about this.