CatkinJane offers three standard widths of tie - slim, regular, and regular plus

The slim width tie measures 2.5" (6.25cm) across at the widest point
The regular width tie measures 3" (7.5cm) across at the widest point
The regular plus width tie measures 3.5" (9cm) across at the widest point

3 standard widths of CatkinJane ties

slim width tie

slim width tie

The CatkinJane slim width tie is 6.25cm (2.5") measured across at the widest point. 
It has a straight taper providing a small knot.

regular width tie

regular width tie

The CatkinJane regular width tie is 7.5cm (3") measured across at the widest point. 
It has a straight taper.

regular plus width tie

regular plus width tie

The CatkinJane regular width tie is 9cm (3.5") measured across at the widest point. 
It has a straight taper.

back of CatkinJane tie showing self tipping and label keeper loop

 

All CatkinJane ties are self tipped - the tipping is the small part of the inside of the tie that you see at the back of the tie.
Self tipping means that I use the same fabric that is used for the body of the tie, not a cheaper inferior fabric.

The ties all have a CatkinJane CKJ for Men label which doubles as a keeper loop for those who like to keep the tail of their tie tidily connected to the blade (front)

The tails of the tie are also self-tipped and are cut in proportion with the front or blade of the tie.
The width of the tail is approximately half the width of the front when measured across at the widest part

Choosing the width of your tie

When considering what width of tie to wear a number of things may be considered:
Your body type
Men with small chests and narrow torsos generally look better in narrower-width ties - it's just a matter of proportions, a wide tie on a skinny guy will look a lot wider than it would on a man of more substantial girth. So perhaps the best choice would be a slim tie.
For a more average sized man either the slim or regular would probably be most appropriate, and for the more generously built gentleman the regular or regular plus are probably the better choices - a slim tie can look out of place on a larger frame. 
The lapel width of your jacket
It is best to match the width of your tie to the width of your jacket's lapels - slim ties with wide lapels and vice versa tend to look out of balance. The exception to the rule is double-breasted jackets which, regardless of the lapel width, tend to look wrong with slim ties.
Fashion
Trends in tie width are changing all the time - it's always worth keeping an eye on what is currently in vogue
Personal style
But most of all you should choose the tie width you like best! If none of the standard CatkinJane ties are just your style you can always ask for you favourite width to be made as a custom order

 

3 widths of Liberty print ties available from CatkinJane