Masuri M-VSTSSM Vision Series Test Steel Cricket Helmet The vision series test M-VSTSSM grille uses certified grade 5 Titanium or high grade stainless steel Made from the latest reinforced plastics, hrs significantly increases protection by ensuring Minimal deformation of the helmet shell during impact The innovative 3-layer protection System incorporates strategically placed vents in the inner and outer shells and air channels throughout the cavity, allowing air to circulate freely at all times