PRETOEE MOTORCYCLE HELMET Measure the circumference ofyour head as shown. Put measuring tape above earsand slightly above eyebrows. Then you can choose a helmetaccording to your needs. If your head circumference is inthe middle of the two sizes, it is recommended to choose one size up SIZE Size: 31x25x18cm The gross weight is approximately 0.8kg M:57-58m 22.44-22.83in
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