Petzl Replacement Foam 
 
 
Petzl's Replacement Foam fits is for use with Vertex or Alveo Helmets. This standard replacement foam inlcudes one regular foam for most head sizes and one thick foam for smaller head sizes. Petzl's Replacement Foam is made from polyethylene for comfort and easy maintenance. 
 
 
 
 
 
Features:
 
 

 
 
Standard replacement foam includes:
 
 

 
 
regular foam for most head sizes
 
 
thick foam for smaller head sizes
 
 
 
 
Easy maintenance
 
 
Fits in Alveo and Vertex Helmets