bell 500 good times helmet - Custom RSD Wreakers With 5 shell sizes the Custom 500 is sure to give the rider a personalized fit regardless of where you are on the size chart Bell Custom 500 Good Times

I dont have anything to add re: helmet tech but was seriously fascinated by this breakdown

Balance between overall weight, carrying capability and user comfort. The sliding back system is a little fiddlier than some, but it has a wide range of adjustment to suit various torso lengths (hint: youll need to detach the Velcro lumbar pad, which folds down to give access to a hidden buckle)

I always wondered what the story was with these "non-cataloged" models, and here is all of the info about them straight from the factory

Allow the stove to cool naturally before attempting to handle it

Gloves with velcro straps are great because they provide an adjustable fit for every type of hand