New climbing style helmet addition to the PORTWEST Height Endurance head protection line featuring a high-performance ABS/PC helmet shell with inner foam liner and a chin strap inclusive. This helmet meets the requirements of ANSI/ISEA Z89.1 for Type II Class C. Type II helmets help to reduce the force of impacts not only to the top but also the side of the head and make it an all-round excellent choice of head protection. Vents in the helmet shell help to reduce heat by allowing hot air to escape. It meets the optional performance requirements of Lower Temperature (LT) and Higher Temperature (HT). Compatible with PW47 earmuffs and PS58 visor holder for mesh visor PS94 or clear visor PW99.