They're described on the bag as "cheesy, thin, and crispy" and are still made with wheat, but with some dried potato mixed in. Like regular Cheez-It crackers, they're baked and there's some cheese in there.
Cheez-It Snap'd comes in four varieties; White Cheddar & Bacon, Double Cheese, Cheddar Sour Cream & Onion, and Jalapeno Jack.
You can find them at retailers nationwide in 7.5-oz bags and .75-oz snack pouches. If you're having problems located them, they're also available online for about $3 a bag from Target and Walmart.
Photo via Kellogg's.