Salomon says the race-inspired X Max 130 offers modern creature comforts thanks to 360 Degree Custom Shell Technology where a heat moldable lower plastic shell wraps around the entire foot and can take away pressure points and correct fit issues. Inside, a new stance places the foot further back, alleviating toe pressure. Heat-moldable race stock liners further customize the X Max 130’s fit. On the outside, Twin Frame technology adds stiffness to the shell where needed for control and power transmission. Note: this boot's last size can range from 98 to 104 mm.