A few years back Rossignol added the S1 to their skate line up to fill a void. Rossignol knew its skis were maybe not the best in cold snow, especially cold soft snow, but the S1 is the answer and perfect solution. It has longer glide contact zones and a specially formulated base for cold squeaky snow. I have seen a lot of camber variation in S1 skis over the years and the pairs I find with limited splay and long contact in addition to low contact pressure are unbelievably good in cold snow across the board… both firm and soft snow. You must realize almost all Rossignol skate skis have great stability so the pairs with smooth pressure provide the best of both worlds… great stable platform and fast.