| 摘要 |
Aspects of the present disclosure involve a base member, a pair of tower members, and a strap. The base member includes a substantially planar bottom surface, a top surface opposite the bottom surface, and an opening extending through the top and bottom surfaces. The pair of tower members extends upward from opposite ends of the top surface of the base member. The strap releasably secures to each of the pair of tower members at a chosen height and with a chosen amount of slack. The strap includes a handle positioned between a first end and a second end of the strap, wherein the chosen amount of slack of the strap is adjustable by coupling the strap to each of the pair of tower members at different positions on the strap. |
