Product Details: Brand:ROCKBROS Type: Intergrally-molded Material:Outside: PC, inside :EPS,Nylon adjust belt Size:About 26*21.5*15cm,fit head :S 55-58cm，M 58-61cm Weight: About 260g,278g Feature: Ultralight/Anti-Sweat/Shock Resistance/Ventilation, Use air cooling make the air free Brethable,Adjustable size,Magnetic-snap,easy to wear and take off Measurement Method INTEGRATED One-Piece Molding Air gide / Breathable / Reduce wind resistance Safety certification professional testing CPSC American Standard Certified Air guide & breathable, reduce wind resistance. Protective lining, comfortable & breathable. 360° rotation to adjust the head circumference. 18 ventilation holes to reduce sultry heat. Magnetic quick wear and take off Can be worn and unbuttoned with one hand. Highlight reflections, night ride protection. Comfortable thickened chin pads. Angle display

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