The remote controls for the Ventura heated vests are awesome, but sometimes they can be accidentally activated when the gear is packed for travel or attached to gear when changing tanks, etc (I use a snap shackle instead of a wrist strap). This guard snaps over the controller to keep the button from being pressed.
I use PETG in bright colors which makes it easy to remember that the guard in on (and find it at the bottom of my gear bag).
The author marked this model as their own original creation.