3Ms 333Lg Headcover Large Glovezilla Cut open any old felt Cut open any old felt blisters and apply a coat of Isoflex Liquid Rubber underneath and secure with felt tacks They can also withstand high water pressure and severe mechanical stresses• Outer fabric is fully seam sealed for maximum protection against the elements whilst remaining breathable to allow wearer to work in comfort• The collar is shaped and contoured for compatibility with hard hats and can be combined with a detachable hood GTHV161OR when necessary• GTHV161OR hood to be purchased separately• Approved to BS EN ISO 20471: 2013 Class 3 S 300 Series is our high durability head cover with an integrated head suspension for full head and face coverage It can be used with 3M™ Powered Air Respirators and Supplied Air Respirator Systems in a wide variety of applications