| 摘要 |
A support belt and buckle has a rotatable member on buckle cross bar; and a pair of cam surfaces along the rotatable member and diametrically situated thereon, wherein faces of the rotatable member extending between the cam surfaces are flat. The belt may have an elastic material, the elastic material secured to a first position on the belt and the elastic material extending lengthwise on the belt and the elastic material secured to a second position on the belt, wherein the elastic material is more elastic than the belt.
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