The Pyramex SL Series hard hat is available with 6 point snap lock or 6 point ratchet suspension in order to best absorb impact. The hard hat has been tested to withstand impact, penetration, flammability, electrical insulation, marking and humidity which means it is an extremely versatile hard hat in most hazardous working environments. The outer shell is made from a high density polyethylene while the inner suspension is made from a durable nylon. A great feature of this hard hat is that the brow pad, suspension and head band are all easily replaceable. Universal accessory slots allow for easy use with mounted ear muffs and accessories and this cap style hard hat also accommodates chin straps. The ratchet suspension can be adjusted while wearing and the snap lock suspension has adjustments that can be tucked away for comfortable use.