Features:- Dynamic Design Helmet - AHR RUN-M3 Modular Flip Up Helmet features dynamic streamlined design with stylish pearl silver; Flip up design for convenient phone talking or smoking; Suitable for motorcyclists to use in daily rides, ATV, motocross or dirt bike, etc- Safe & Comfortable - Impact resistant & lightweight ABS shell with high-density EPS can absorb impact & shock; With breathable eye-bird mesh liner for better ventilation & cozy wear; Meets American DOT certification- Good Ventilation & Streamlined Design - Ventilation opening system for air intake and exhaust, bringing you sufficient air flow to offer coolness & breathability during riding; With aerodynamic design to reduce wind drag- Dual Visor & Quick Release Buckle - Transparent visor brings clear & wide vision and strong protection from impact or wind; Sun shield visor for sun blocking; Quick release buckle on adjustable chin strap to easily taking onoff for your convenience- Easy to Clean & Carry - Removable & washable liner & cheek pad for easy & regular cleaning; With a carrying bag for easy storage & carrying; The helmet size is a little smaller, please refer to the size chart and choose a bigger size; S size helmet fits for head circumference range from 21 58" to 22 116"Specifications:- Overall Dimension(LxWxH): 14 38" x 10 116" x 10 716" (36.5 x 25.5 x 26.5 cm)- Size: S- Fits Head Circumference: 21 58" to 22 116" (55 to 56 cm)- Material: ABS, EPS- Net Weight: 3.53 Lbs (1.6 kg)Package Contents:- 1x