arai tour x4 vs arai xd4 - XD-4 ADVENTURE HELMET - DISCONTINUED sculpted vents improve ventilation Size:S/M: fits 4'11" - 5'8" Tested: Trek Madone - __label2:100%AUTHENTIC

arai tour x4 vs arai xd4 - XD-4 ADVENTURE HELMET - DISCONTINUED sculpted vents improve ventilation Size:S/M: fits 4'11" - 5'8" Tested: Trek Madone - __label2:100%AUTHENTIC

Tested: Trek Madone - Bicycling Australia

Adjust speed limits and acceleration curves

__label2:100%AUTHENTIC

Size:S/M: fits 4'11" - 5'8"

Key Features Onboard AiR-Lock system with full-wrap coverage lets you adjust your own fit on the sideline, no handheld pump needed Tektonic Mohawk external impact system pairs with the internal RFLX-S layer for all-round impact management Automotive-driven rear diffuser lowers the helmet's back profile for improved all-day comfort Fusion Hardcup chinstrap comes fitted as standard, with an attached carbon steel facemask Rated 5 stars by the independent Virginia Tech Helmet Lab Who Is the Schutt F7 AiR Varsity Helmet Best Suited To

sculpted vents improve ventilation efficiency as well as helmet stability on your head at speed