Fischer’s now established Vacu-Plast shell makes the Vacuum Trinity 110’s shell custom moldable up to 10-mm by a bootfitter. Three modes change the mobility of the cuff: hike, ride and lock, where the lock mode blocks the cuff for race-boot performance. The women’s high-performance boot also comes with Ultralon thermoformable padding in the liner and a neoprene and lycra toebox that insulates as well as adapts to the forefoot’s width.