Impact Resistant Bike Helmet bike helmet meets US & EU cycling standards. In-molding technology joins thick EPS foam core and durable high density PC outer shell to ensure this bicycle helmet absorb the impact force in the crash and keep your head safe when road cycling or mountain biking. Bicycle Helmet with Detachable TaillightBike helmets for men women comes with led back light in the shape of diamond. 3 lighting modes (steady, slow flashing and fast flashing) help people behind you recognized your direction clearly, and provide max visibility and safety while night riding on the city streets. Extra back-up battery is also included. Cycling Helmet with Sun VisorAdult bike helmets with special design of sun visor shield provides shade when biking, making you reduce glare and increase your field of vision, so that you can enjoy cycling even in hot days, and you can take the visor off when you don't want it. A portable helmet backpack is convenient for you carry it. Adjustable Fit SystemBiking helmet with a standard size, equipped with the easy-use dial system and side straps make this mountain bike helmet adjustable to different head size 57cm-62cm(22.44-24.41) and fit most cycling riders both men and women. Super light-weighted 270g(0.59lbs) bike helmets for adults will not cause any burden to the rider's head during cycling. Super Comfortable Bike HelmetsAerodynamic and ventilation design 22 vents allow air go through the biking helmet, which is helpful to increase the speed and keep cool during riding a bike. The inner pads is super soft and comfortable, which can be removed to clean. A good bicycle helmets for adults will keep you comfortable, good looking and confident.