Impact resistant baseball style bump cap. 
Highly ventilated. Mesh fabric on top part for more comfort. 
Lined with polypropylene and comfortable EVA foam shell to absorb shocks. 
Adjustable size by buckle 55/62 cm.
Exterior : polyurethane-coated polyamide or polyester.
Inside shell : polypropylene.
Reinforcement of the shell : foam.