Portwest PS53 blue climbing working at height safety helmet Product information Safety helmet that is designed to be specially used for working at heights or for leisure sports protection. Light, comfortable and compact with a short peak. ABS shell, textile comfort harness 6 points, wheel ratchet adjustment, size 52-63cm. It has an improved technical sweatband and 4 points chin strap (Y style) with soft rubber chin protector included. EN 50365 Class:0 ANSI/ISEA Z89.1 TYPE I (Class E - LT (optional)) EN 397 (-30°C/+50°C ).