-RH-9092 made from ABS and PE material for RH-9090, RH-9091 -Strong, yet ultra-light for long term use -Replaceable soft brow pad, suspensions and headbands also available. -Low-profile design and low center of gravity offer excellent balance -Innovative suspension bends at flexible points for a better fit -Meets ANSI Z89.1-2009 standards, type 1, Class C, G, and E.