A comfortable, versatile helmet with clean aesthetics and the added protection of Mips. Style, comfort and protection for any ride The Trek Solstice Mips helmet is the perfect choice for riders who want to dabble in road and trail riding. It's super comfortable, has an easy-to-use fit system and features a simple, clean aesthetic that easily transitions from track to tarmac. This helmet also features a Mips safety system, which is a helmet technology designed to help protect riders from rotational forces that occur during some cycling-related accidents. Product details Mips safety system Refined styling with a removable visor easily transitions from road to trail Large vents and recessed channelling keep you cool on warm days The Trek Headmaster 3 fit system provides simple and secure adjustability with just one hand Soft, comfortable helmet pads wick moisture and are easy to wash after a full day of fun Crash Replacement Guarantee provides free helmet replacement if involved in a crash within the first year of ownership The 30-Day Unconditional Guarantee allows you to return your helmet if you're unsatisfied for any reason Earned a 5-STAR safety rating from Virginia Tech Size S/M M/L Circumference 51-58 cm 55-61 cm Fit system Headmaster II Headmaster II Pad material Moisture wicking pads Moisture wicking pads Buckle type Standard buckle Standard buckle Includes Crash Replacement Guarantee Crash Replacement Guarantee