Demon Podium Full Face Mountain Bike Helmet (Black, X-Small) EPS foam liner conforms to your shape for superior fit. Removable, washable helmet liner 2lbs. 2oz., 13 convenient air flow vents CPSC certified Includes helmet bag Measure your head circumference for proper size- XS 49-53cm, SM 54-55cm, MED 56-57cm, LRG 58-59cm, XL 60-61cm