The TSG Evolution BMX Helmet features TSG's custom low, snug fit, the Evolution helmet is one of the slimmest hardshell designs available. It features a tough skate-style hardshell construction, which securely protects all the useful bits of your noggin. The design curves anatomically around the head for a great fit and tailored wearing comfort. The injected colour line is manufactured with a less elaborated colouring process allowing us to offer it at a lower price range. TSG Evolution BMX Helmet Features Material: ABS Hardshell, EPS Impact Foam. Fit: Low Fit, Snug Fit, Tuned Fit System. Ventilation: 14 Aerodynamic Vents, Air Flow Channels.  Heat-Sealed Padding Kit in 2 sizes.