Ski An'gel The action of skiing creates friction between the skin and padding of the tongue of the boot (shear force). SKI-AN'GEL overcomes this by using a soft layered pad of slightly sticky gel which, when placed against the skin, effectively transfers friction to the outer surface of the pad giving you ultimate protection. The Ski Angel pad of bonded gel when placed over the projecting tibial crest effectively removes the friction zone 2mm outwards and away from the skin surface. The new shear force area is now happening between the outer area of the Ski Angel and the boot.