The HMK Highmark Pro is the ultimate in snowmobilingfootwear technology. From the new HMK Pro outsole to the torsional stability bars to the exclusive Medial Static Pad to the best proven snowmobiling liner on the market, HMK continues to set new standards for snowmobile boots. Highly water resistant, but not 100% waterproof. If additional waterproofi ng is desired we recommend treatment with Revivex, Granger’s, or a similar product.HMK Thermo Lace-Up Liner is extremely warm and ultra lightweight. It features an exoskeleton exterior support system that provides maximum ankle stability and a one-pull Kevlar lacing system, standard on Highmark Pro.The HMK Factory Team designed the leather Medial STATIC PAD for maximum grip and abrasion resistance