Preheat oven to 375°.
Stir together flour and baking soda.
Beat butter with sugars on medium speed until creamy.
Add vanilla and eggs, beating well after each addition.
Gradually add the flour mixture to the batter.
Stir in the chocolate chips and pretzels.
Drop by Tablespoons onto an ungreased cookie sheet. Bake for 9-11 minutes.