There are a number of models of the power tower, which allow you to perform unique exercises with additional design elements. (best-powertower.com)
Additional design features addressing head injury in side impact crashes are needed to achieve further reductions in fatalities. (iihs.org)
Ask your designer about the cost difference to do the full paperback cover up front, so you don't have to go back and get additional design work done later. (dinkylune.com)