Shell: High density ABS injection moulded Liner: EPS polystyrene foam Ventilation: 12 vent cooling system Inner padding: 3 piece removable and washable Pads included 9mm, 6mm & 3mm Safety certificate: CE EN 1078 Sizing: Youth: OSFA: 49-54cm - one size fits all Adult: S/M: 54 – 57cm Adult: L/XL: 58 – 61cm Bullet X Slime Balls Slime Logo Helmet Black