The Stilo ST5 F Composite utilises the same shell shape as the ST5 GT Carbon and is fitted with a full long visor and central locking system, this helmet is ideal for competitors who race in open-top race cars and also require built-in electronics. While the ST5 F Composite offers all the same standards as it's carbon sibling, it comes at a more affordable cost. The shell of this helmet is manufactured from a Dyneema and Kevlar mix offering a strong construction with only a slight weight penalty in comparison to Stilo's carbon models.