Specifications:- Overall Dimension(LxWxH): 14 9/16" x 11" x 9 7/16" (37 x 28 x 24 cm)- Size: Xxl- Fits Head Circumference: 24 13/16" to 25 3/16" (63 to 64 cm)- Material: Abs, Eps- Net Weight: 3.3 Lbs (1.5 kg). Package Contents:- 1x Helmet- 1x Carrying Bag- 1xManual