TS Series The Tuff Spa TS Series has 3 models to choose from. These spas are roto-molded and come with standard vinyl cover. The TS100 was perfect for small spaces or couples. The TS300 is unique round spa not avalible with most spa lines on the market today. The TS500 is a large 6-7 person spa with many features. The complete line of Tuff Spas are availble in the Tahoe or Greystone colors. Read more about the TS Series of Tuff Spas TT Series The Tuff Spa TT Series has 3 models to choose from.  These spas have the new Tuff Top Hard Cover and new stone pattern access panels.  The Tuff Top Covers are roto-molded like the entire Tuff Spa line and are the newest addition to the Tuff Spa Line.  The TT200 has the same configuration as the TS 100 but includes the Tuff Top Cover.  The TT 400 and TT600 are similar to the TS500, but again with the new Tuff Top Cover. Read more about the TT Series of Tuff Spas