The sweaters a polyester/cotton mix and are unisex sized. They fit very typically to many other unisex sizes.  There is also a size chart in the photos, please see this for measurements if you are unsure which size you are.
 
The primary colour you are choosing is the sweater colour options. 
Black / Navy sweaters will have white writing
Grey / White sweaters will have black writing
 
If you want another phrase like FIELD or TRACK or POLE VAULT please just leave that in the personalization section, I will make it custom for your event!