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.