PS5 is the hardest glide wax in the new Fluoro-free Performance Speed ("PS") Swix line and performs best in cold snow, whether old or fresh. Speed is the best in very cold low humidity snow, but it is also a top choice as a hot wax to provide durability when liquid waxes of any type are used. Best in temperatures -10AdegC/-18AdegC 180g package Recommended iron temp: 150AdegC (311AdegF) Fluorocarbon free