BESTWAY 56714 POWER STEEL T SWIM VISTA SERIES T II NEW MODEL. This is guaranteed by the high-quality PVC Tritech T material from which it is made, and the corrosion-resistant steel frame of which the frame is made. Additional advantages are the Seal & Lock System T, thanks to which the assembly of the elements of the pool structure is very simple and does not require the use of additional tools, and a drain valve thanks to which draining the water is simple and quick.