The Scarpa Omega Thermo is a lightweight, warm and comfortable mountaineering boot with a Peebax plastic upper that provides flexibility, durability and resistance to temperature change. It features the customisable, mouldable liner for a lightweight precise fit and warmth. It also has a hinged ankle cuff and an underfoot rocker for walking comfort, and a Skywalk Baltoro sole with ice grip rubber compound. B3 Rated. NB liner needs professional fitting in-store.