In-mold composite skeleton increases structural integrity and allows a greater variation of vent shape and size;Headmaster II – Intuitive one-handed fit system adjustable by height and circumference with premier look and feel;AgION fit pads – Moisture wicking antimicrobial pads eliminate odours completely and naturally;LockDown strap dividers – Helmet strap management made simple: flip open to adjust, flip closed to secure;Internal, recessed channels manage airflow through the helmet and over the head;Unconditional Bontrager Guarantee;Crash Replacement Guarantee – Free replacement if your helmet is involved in a crash during the first year of ownership