Ski boot of the overlapping type, including a rigid shell base surmounted by an upper, the upper including in its front portion an upward extension of the shell base, and in its rear portion, a rigid rear spoiler journalled with respect to the shell base, and a tightening arrangement being distributed...http://www.google.com.tw/patents/US5598646?utm_source=gb-gplus-share專利 US5598646 - Ski boot
