Powerslide MyFit 2nd Skin Dual Fit Liners. Lower volume to work in narrower hard-shell boots that in most cases leave less room for padding. 3-D anatomically shaped padding made of various amounts of layers, high-end foams, thickness, and densities. 4-way stretchable toe fits two sizes and a pre-molded tongue made of EVA foam feels like a 2nd skin. The heel area is heat mouldable if preferred, and integrated lacing system.