A helmet system having: an outer helmet, an inner helmet, at least one connector resiliently joining the outer helmet to the inner helmet, the resilient connector being configured to allow the outer helmet to rotate about the inner helmet, and one or more straps configured to be connected to the inner helmet to secure the inner helmet to a wearer's head. The helmet system does not have any straps configured to secure the outer helmet directly to the wearer's head. A helmet visor and other helmet configurations are also provided.