Preheat oven to 250 degrees F. In a large bowl, combine cereal and pretzels. Set aside.
In a small microwave-safe bowl, melt the butter. Add the vinegar and salt to the melted butter. Stir to combine. Pour butter mixture over the cereal and pretzels and gently stir until well coated.
Pour mix onto a large baking sheet. Bake for 60 minutes, stirring every 15 minutes. Remove from the oven stir in the salt 'n vinegar almonds.
Let snack mix cool to room temperature and serve! Store snack mix in an airtight container for up to 2 weeks.
Note-You can also make this snack mix in the microwave. In large microwavable bowl, mix cereals and pretzels; set aside. In small microwavable bowl, melt the butter. Stir in the vinegar and salt. Pour butter mixture over cereal and pretzels and gently stir until well coated. Microwave uncovered on High 5 to 6 minutes, thoroughly stirring every 2 minutes. Spread on paper towels to cool. Store in airtight container.