NOTICE: THE ELEVATION MASK 2.0 IS SOLD SEPARATELY. Jason, the headband for customisation, is the original accessory that you have to wear in your most intense workouts. Go to upper level with style! Characteristics : - The original pattern "Jason". - Elevation Mask 2.0 is sold separately. Guide sizes: - (50-70kg): width of 10.1cm. - (70-120kg): width of 11.4cm.