China Factory Direct Sale Adult Magnetic One-Piece Cycling Road Bike built-in plastic skeleton Helmet

HIGH QUALITY: 

Joins thick EPS foam core and the outer polycarbonate shell to ensure better shock absorption. Ultralight bike helmet, weighing only 280g. 

Eco-friendly materials like plant-based foams, recycled plastics, and natural fibers would reduce environmental impact. These materials are advancing but need more testing to prove safety.

Smart materials that stiffen on impact, or active cooling materials could dynamically improve protection and comfort. Expect more integration of technology into helmet materials.

PERFECT PROTECTION:

Dual mold integrated molding technology, four separate PC shell + high density EPS foam + built-in plastic skeleton to strengthen the helmet structure.

Bicycle helmets play an important role in protecting cyclists from head injuries in the event of an accident. According to a study published in the New England Journal of Medicine, helmets reduce the risk of head injury by nearly 70% and the risk of brain injury by nearly 65%.

Wearing a properly fitted bicycle helmet each time you ride is the single most effective way to prevent or reduce head and brain injuries. The inner liner absorbs the energy from the impact to minimize the force transmitted to the head. The hard outer shell spreads the force over a broader area so less of it is transmitted to the rider's skull.

While no helmet can prevent all head injuries, choosing a quality helmet and wearing it on every ride can greatly reduce the risk of permanent injury. Proper helmet use should be part of every cyclist's basic safety practices.

ADJUSTABLE BUCKLES:

Equipped with durable quick release buckle and adjustable dial,make this snowboard helmet suitable for different head circumference and comfortable to wear.

The straps and buckles are key components that allow the helmet to be properly secured to the rider's head. Most quality bike helmets use nylon for the straps. Nylon is a strong, flexible, and durable material that is well-suited for straps that need to withstand frequent adjustments and tension.

The nylon straps are produced through an extrusion process where the molten nylon material is pushed through a die into long strands that are then cooled and solidified. These strands are stretched and woven together to create nylon straps with the desired width and thickness.

COMFORT PADDING:

The comfort padding inside a helmet is a crucial component for rider safety and enjoyment. The padding serves multiple purposes - absorbing impact, wicking away moisture, preventing the helmet from rubbing, and ensuring a proper fit.

The padding production starts with cutting foam or fabric materials into the required shapes and sizes. The foam can be open or closed-cell, with open-cell being more breathable and closed-cell providing more support. The fabric is often a technical performance material designed to wick sweat.

Precise die cutting machines are used to cut the padding pieces efficiently and accurately. The pieces are then assembled into pads and inserted into designated areas inside the helmet lining. This is done either by hand or using specialized equipment for large scale production.

VENTILATION:

Proper ventilation is crucial for a safe and comfortable bicycle helmet. Helmet vents allow air to flow through the helmet, cooling the rider's head. The number, size, shape, and placement of vents all factor into a helmet's ventilation system.

Most quality helmets have between 12-25 vents. More vents provide better airflow, but also compromise the helmet's structure. Large front vents pull air into the helmet, while rear vents expel warm air. Top vents assist with updraft. The best helmets find a balance between sufficient ventilation and safety.  

Vent design affects airflow too. Vents with smoothed edges and contoured shapes improve airflow. Strategic vent placement draws air over hot spots like the forehead. Channels between vents guide air through the helmet. Some helmets integrate ventilation into the retention system with padded cups that lift the helmet slightly off the head.

Advanced helmets use computational fluid dynamics (CFD) software to optimize vent design. CFD models air movement to pinpoint areas of high heat concentration. Engineers tweak vent shapes and placements to target ventilation to these hot spots. Prototypes are then wind tunnel tested to confirm ventilation efficacy.