Kali Protectives 2014 Saha Team Kalifornia Commuter Helmet (Rust - S/M) Size Medium Polylactide (corn based) outer shell 100% Recycled expanded polystyrene material 100% Natural Non-bleached cotton & flax fabrics Water Based Coating; Washable, adjustable, anti-microbial fit pads Dial Fit System with dial for optimum fit; Each helmet adjustable to fit S/M and L/XL