Shell in 2 sizes. Shell material ABS. Varnishing with special Metal paints for increased weather resistance. Inner padding material High sweat absorption fabric and mesh fabric net. Fabric with silver ion treatment for an effective bacteria-static action. Not removable inner padding. Sizes XXS, XS, S, M, ML, L, XL Inner Sun visor manually operated, with approved anti-scratch treatment and absorption of radiation up to 400 micron. Chinstrap with micrometer buckle.