As many other reviews have noted, the Tretorn Nylite was a GREAT shoe for playing tennis from the middle 1960s through the early 1990s.  They then almost disappeared for several years.  When they came back, now under Puma ownership, the styling was similar to the original from the 1960s, but the quality was very poor.

As of early 2013, the situation is a bit confusing as there are at least 3 different Nylites being made and sold.

(1) The Tretorn Nylite Canvas with an off-white upper and a gull-wing that is pink, navy, or white-white have very poor quality.  Missing features include soft arch support, padded ankle collar (just stitching now), the terry cloth shoe liner, and the high heel counter in back (to keep the shoe/foot together when playing tennis).  I recommend avoiding these entirely, partly because of the hope they will be replaced by improved versions (see more below).

(2) The seasonal Summer 2012 editions, which have a coloured upper with a contrasting colour gull-wing, did bring back the terry-cloth lining, but still lack the other features.

(3) The seasonal Winter 2012-2013 editions, which have a waxed cloth upper in neutral colours (tan, ebony, olive), substitute a corduroy lining (rather than terry-cloth).  These are better than the regular versions (#1 above) and similar in quality of construction to #2 above.

In case Puma/Tretorn are listening, I'll repeat other folks' comments that this shoe would sell much better if they would restore the quality from the 1960s - 1980s period.  Raise the heel counter a bit, back the way the original Nylite was designed, so the shoe will fit better.  Restore the terry-cloth lining, put actual soft padding in the ankle collar (which is just stitching for show at present), the soft foot-conforming footbed, and the soft arch support.

If they would do these simple things and restore the quality, this would sell better and would resume being a great shoe for casual tennis/racquetball use.  Modern leather tennis shoes are heavy and overly rigid.  There really still is a market for the classic Nylite, if only they would make it as it used to be made.  Tretorn/Puma still could vary the colour options from year to year, offer leather and canvas uppers, and encourage people to own more than one pair.  (Formerly, people would own several different pairs, in different colours, to help with colour coordination with the rest of one's outfit. :-)

In the meantime, folks reading this review at least ought to understand more clearly what they are buying.