New I.Q.Shion Comfort Liner- High level of protection and premium comfort and fit Single Tool Free Adjustment- Easy adjustment at back of helmet Pro Prefered look with geometry to help absorb impacts CCM Tacks Helmet Sizing Chart Size Hat Size Circumference (in.) Circumference (cm.) Small 6 3/8 - 7 20" - 22" 51 - 56 Medium 6 7/8 - 7 3/8 21.5" - 23" 55 - 59 Large 7 1/8 - 7 3/4 22.5" - 24.5" 57 - 62 Please Note: This sizing chart is for reference only and may not reflect personal preference. CCM Helmets are warrantied to be free from manufacturing defects and workmanship for a period of one (1) year from the date of purchase when used as intended under normal use and without alterations.