How to get a free sub from Subway for National Sandwich Day

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Want cheap but yummy cheesecake? Head to Junior's today. Details in this video. 

Subway restaurants are giving away free sandwiches for National Sandwich Day ... but there's a catch.

To get a free sandwich, you’ll need to buy a sub and 30 oz. drink. Then, you can get another sub of equal or lesser price for free.

There’s an additional charge for extras, and the deal cannot be combined with other offers. Another note in the fine print is that not every location is participating.

Subway is promoting the deal with their campaign #SaveLunchBreak.