PRO:
- 42" x 42" is a medium size for a normal cotton shemagh.  Some are bigger (50"x50"), but most 'cheap' ones are 38"x38" or so.
- Made of cotton.  This is the correct material, from my understanding.  Polyester is common for 'cheap' shemaghs but performs differently.
- Colors are nice and bright.  You can find one to go with almost any outfit.
- Dye doesn't run or bleed when washed.  Some companies use junk dye which comes right back out and will stain your clothes.  This one doesn't.
- Looks awesome.
- Versatile: can be tied as many ways as you can imagine.  Works well for keeping warm in cold conditions as well as keeping cool in hot conditions.

CON:
- Smells weird.  Not sure what it is.  Smells like chemicals or plastic, likely from the dye or packaging.  Smell immediately fades when washed.
- Could be larger.

Last comment: cotton absorbs moisture (duh). If you use this as a winter face cover, moisture from your breath may cause it to frost or freeze solid.  Snow may collect on it and freeze in as well.  No damage will be done but it might not be ideal for winter sports.