They will not chip or crack like concrete and are built to withstand abuse from gas

Double Stitched Seams

Bare: includes adapter only

No metal parts

and a Velcro front closure for an easy on/off fit

Ironwear® Non Vented Safety Helmet - Type 2 - 4 Point Suspension - White - 3975 Weight_34 LBS They will not chip orIronwear Non Vented Safety Helmet Type 2 4 Point Suspension White 3975 Features White Type II Safety Helmet For protection against a blow to the top & sides of head Features adjustable chin strap and a ratchet closure with a 4 point suspension Meets ANSI ISEA Z89. 1 Made from PC & ABS (Polycarbonate & acrylonitrile butadiene styrene) Class E (Electrical, tested up to 20,000 V) HT (High temperature up to 140 f + 3. 6 f) & LT (Low temperature above 22 f