The Schroth XLT (XtraLighT) has been developed to be the lightest FHR available. Constructed from Carbon Fibre with a new design to keep the weight down to just 464g (approx. 650g including padding and tethers) which on average is an incredible 25% lighter than the previous Carbon Pro model. The FHR device is supplied with a pair of helmet clips (posts). These MUST be fitted to your helmet to allow the correct fitment of the FHR device. The FHR device WILL NOT connect to other types of helmet clip.