Material of the Kids Chest Armor Vest: Triple protection: PP plastic shell + filling hole lining + 2 layers of EVA protection pad. It's anti-bump, anti-fall and shock-resistant, protect the chest, back, spine, shoulder, and other important body parts. Breathable : Kids and youth chest protector with muti ventilation hole. Maintain ventilation ,you won't feel stuffy even in summer Comfortable and Lightweight : Kids' Dirtblke Protective Gear weights under 2 lbs, so can be well attached to human bodies, and cannot affect normal movement. Don't worry it will be your burden. Adjustable Chest Protector : Kids dirt bike gear has 4 size, adjustable shoulder belt and waist belt. Suitable for children, boy ,girl, teenager Versatile: Can be used for dirk bike and bicycles,motocross , motorcycle , skiing and ice skating, skateboarding, cycling, outdoor sports, or any other activity that requires additional protection. 1