1. necktie length
In social etiquette, a necktie should be worn in a suit, and the length should reach the belt buckle. If wearing a vest or sweater, the necktie should be placed behind them. The standard necktie length is between 132 cm and 142 cm. After the necktie is finished, the necktie point should just fall on the belt buckle.
2. necktie width
Neckties ranging from 2 cm to 15 cm wide were once popular. If you want to be on the safe side, choose the ideal size that's not affected by trends: neckties that are 9.5cm to 10cm wide.
3. necktie material
A necktie in silk is always the right choice.
4. necktie color
You can't go wrong if the shirt and necktie are the same color scheme, but it doesn't have to be. The basic principle is that the necktie color must be darker than the shirt color (except for the black shirt of course).
5. necktie style
As long as the necktie length is properly matched, it can also look good in a plaid shirt. A solid color shirt with a solid necktie of the same color is a good choice, but the real classic necktie is diagonal stripes, about 1.5 cm wide. If you don't want to make a fool of yourself, then you must pay attention that the direction of the diagonal stripes must not point from the left shoulder to the right waist.