Fig08 RESEARCH ON SHELL SIZES AND FINAL HELMET WEIGHT At high speeds your entire helmet is surrounded by a low pressure area. In fact, at a fast enough speed, or in a boxy enough curling position all your shades will be sucked out far enough that they start to hit the airflow and your whole body makes this really COOL noise... REMARK: Of course, if your not expecting it, its kinda scary :) At any rate, this is why your helmets keeps raising, and also why convertible tops and jeeps make such a racket on the freeway... flap flap flap flap..... SHADES SUIT PADS HANDLES ZIPPERS SHOES HELMET SPOILER AERO CUPS IMPORTANT CHAT ROOM ROLL TEXT MAIL POSTCARD