Silk or wool?
When you're choosing a knitted ties, you'll usually have the choice of silk or wool. Both are very comfortable. The give of the knitted structure means you're much less constricted in your day to day necktie use. With wool, you get a warm and cosy feel to the material, so it's great to wear in the colder months. Silk, on the other hand, is wonderfully smooth, and has that crisp structure, making it look sharp as a professional tie. The material really comes down to personal preference. What's more important is the style that you are looking to create.
Choosing a shape
The sleeveless style of the tie means it will always look bold, and more clearly structured than a regular tie. You can also choose between a flat or pointed tip. The general pointers are that a thicker, blunt tie goes with a powerful outfit. So if you're wearing a double breasted coat for example, this will match nicely. On the other hand, if you want a look that's still elegant but stands out less, you could choose a narrower tie with a point. This way it won't overpower the rest of your outfit.
Which pattern to pick
If this is your very first knitted tie, it's probably best to choose a solid rather than striped pattern. This will make it more versatile with your outfits, so you can try it out on different combinations. However, if you're going for a specific look, there are a few options: you might choose a red and yellow stripe for the preppy look, or the fine polka dot for a tie that's professional but cheerful. Try to let your choice of pattern reflect the mood you want to convey.