Aftermarket active head restraints

Does anyone know if there are aftermarket active head restraint systems? A quick Google search doesn't pull up anything, but I thought I'd ask here
since this has become an important consideration recently. TIA
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.