The Small front pad is 1 1/2" thick and intended for small sized heads (cap sizes 6.5" - 7", or head circumference 20.5" - 22"). The Medium front pad is 1" thick and intended for medium sized heads (cap sizes 7" - 7.5", or head circumference 22" - 23.5"). The Large front pad is 1/2" thick and intended for larger heads (cap sizes 7.5" - 8", or head circumference 23.5" - 25").
When removing/interchanging a velcro-backed front pad from your Iron Neck, always peel from the velcro, do not pull the foam material of the pad.
New Velcro Pad Installation (Legacy Iron Neck)
Add the following comment at checkout: "Please include male velcro strip"
Peel existing front pad off
Clear surface of any debris from pad/glue
Remove adhesive backing of male velcro strip and firmly apply, evenly and centered, along inside front of inner ring.
Center and align pad and press firmly into front inner ring