...Ski boot shells; Hoses, non-reinforced挤出和注塑级;与特殊的紫外稳定剂，透明可达6毫米壁厚，非常好的抗水解和微生物，应用;滑雪靴壳;软管，非增强 Extrusion- and injection molding grade; with special UV stabilizers; transparent up to 6 mm wall thickness;...
Until a few years back, skiboot manufacturers refused to sell retailers only the shells, so custom companies had to buy the whole boot and throw away the liner, charging customers for it anyway.