With a 110 flex and medium 100mm last, this ski boot hits the spot between comfort and performance for those intermediate riders. Formula LF Liner and Perfect Fit 3D provides optimal adaption to foot shape and maximum comfort. The extended toe box is designed to increase balance and power transmission with toe support and warmth in mind. Need an even more custom fit? The Formula 110 has a Liquid Fit liner that allows a bootfitter to inject material into the liner producing unmatched comfort and fit.