Construction:Fusion In-Mold Polycarbonate Shell.Vents:14.Weight:350 g (size UM/L).MIPS®-Safety System.Sizes:US/M 50-57 cm .-UM/L 54-61 cm.Application Area:MTB.-Everyday.-Tour.Ergo Fit™ System.-Bell Daily LED Mips.LIGHT UP YOUR COMMUTE.Commuting by bike can be exhilarating yet challenging, and Daily LED is designed to help empower your mission.Our 20-lumen rear LED light is unobtrusive, highly visible, rechargeable via micro-USB, and built into our proprietary integrated MIPS Ergo Fit system.Add in comfort features — including a stylish soft brim and No-Twist Tri-Glides for easy strap adjustment — and the Daily LED MIPS gives you the tools you need for a smooth commute.ROTATIONAL ENERGY MANAGEMENT MIPS® (optional, integrated with fit system).CONSTRUCTION.Fusion In-Mold Polycarbonate Shell.FIT SYSTEM.Ergo Fit LED™ (integrated with MIPS).VENTS.14.OTHER TECH AND FEATURES.Soft Brim Visor.No-Twist Tri-Glides™.Sweat Guide™.Rechargeable LED lighted dial - Estimated run times:2.5 hours steady.5 hours strobe.10 hours pulse.Micro USB cord included.Cord Included (LED).WEIGHT:350 w/MIPS (size M/L).SIZES.Universal S/M 50-57 cm**.Universal M/L 53-60 cm.