Main Materials: Facing: 100% Cotton; Lining: 100% Cotton , Filling: Special IXPE to Maximize Shock Abosorb Capability. Main Function : It can avoid or Mitigate Damage to Baby's Head Upon Collision With Corners Or Hit Ground While Crawling, Walking , Playing. No Bumps Or Serious Damage To Your Lovely Infant As Baby Safety Helmet Protect His Head. Size: Adjustable With head circumference of 43cm to 56cm. Applicable Age: Eight to Sixty Months. Key Features : Very Soft, Ultra Light Weight (65g), Good Shock Absorb Capacity, Proper Air Ventilation To Avoid Sweat. The Colour of the Product may vary as the fabric involves dyeing process due to which there will be a minor change in the colour.