Copy-pasting an old post of mine,
It seems to me that there are four different kinds of silk knits:
1 - Almost flat and light, a sort of piquet weave. These are sold by cheaper retailers such as TM Lewin, and I consider them too ugly to wear.
2 - Crunchy and airy: I have some of these by Borsalino, Les Copains and Polo. I really like them.
3 - Crunchy and loose: this is the Howard Yount variety. Many other brands sell these. They're not bad at all and I wear them...