By Liz White, UT staffRed Wing, Minnesota-US shoe maker Red Wing Shoes decided to do something big for its centenary this year. So it made a boot: a big one. The Minnesota-based firm created a giant version of its 877 signature work boot, first made in 1952, with "white crepe sole, rich original leather and white stitching detail. The 6-metre long by 5-metre tall boot needed a 520-kg boot sole which used 530 litres of polyurethane; 300 litres for the sole itself, and another 230 litres to make the outer sole skin. And the sole, which is 50-cm thick at the heel and 28-cm thick at the toe, "is capable of bending similar to a real sole," the firm said. The leather for the upper itself weighed another 520 kg. Red Wing's massive boot would need a person some 56 metres tall to wear it, the firm reckons. And it has gone into the Guiness Book Of Records as officially the world's biggest boot. In the picture are some of the 60 or so craftspeople who spent some five months, volunteering in their spare time, to make the boot. "