Fischer RC4 Pro 130 Vacuum Ski Boots - The Soma Vacuum RC4 130 Pro is the real low volume deal and is an outstanding race boot for ambitious racers: direct power transfer and perfect fit thanks to Vacuum Fit technology. Still with Soma Tech offset stance for a more natural stance and amazing edge power. Truly custom fit to your whole leg, ankle and forefoot without cutting into it. Also thru the Vacuum Fit system you can align your stance for dead-center canting on your skis. Give yourself an advantage without suffering at the same time.