Enzo's Stick skin formula act as a protective layer for your legs during wet & cold riding. Athletes that compete in these weather conditions understand cold muscles hinder your power output. Embro Stick assure your muscles stay warmer, allowing for maximum wattage output, increasing performance. Embro stick temperature ratings are for exposed skin. Embro Stick Medium is for temps ranging 40's to mid 50's. Embro Stick can be used under leg warmers when racing Cyclocross in nasty, cold conditions.