Moon Adult Bicycle Helmet Mtb/Road Bike Helmets Cycling Mountain Racing Adjustable Ultralight White&Red L

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Additional Info 1.The shell of our bike helmet is made of PC Polycarbonate which is UV Resistant and looks stylish 2.The unique adjustable dial fit system works by turning a small wheel on the back of the helmet instantly and easily provides the perfect fit for your comfort and safety 3. The padding made of velvet is removable and washable.It makes you feel very comfortable and will play a buffer role when your head is being impacted 4.Packing List: 1*Bike Helmet and 1*Removable Visor With 1*Padding (Inside Liner) About the size This adult bike helmet is adjustable.FITS HEAD SIZES: 61-63cm(approximately24"-24.8"),23cm (approximately 9") in length,19cm(approximately 7.5" )in width, and 11cm(approximately 4.3") in depth When choose your helmet,please measure the circumference of the your head by using a soft fabric measuring tape with centimeter increments to get the most accurate measurement. Place the tape measure snugly around your head approximately 1 inch above your eyebrows in front, and just above the top of your ears in the back which should also be under the bump at the back of your head,choose 1-2cm over your head circumference Wearing helmet in a safety way 1.Have the chin strap fastened to ensure your safty. 2.The helmet needs to be smugly on your head--it should not be wiggling around, or sitting high on your forehead. You should feel the resistance of the chin strap Caution&Maintaining 1.Keep this helmet out of direct heat (like sitting inside a car with the sun shining through the window on a very hot day) and solvents. Both of these can damage the integrity of the helmet 2.Please never apply paint,detergent or other chemical products,never apply transfers or self adhesives.The solidity of your helmet could be impaired 3.Don't use gasoline, alcohol and water to wash the helmet,just use a wet towel to wipe