Ruffles is the name of a brand of ruffled (crinkle-cut) potato chips produced by Lay's potato chips, a division of Frito-Lay. The Frito Company acquired the rights to Ruffles brand potato chips in 1958. It later merged with H.W. Lay & Co. in 1961. 
The product is named as an analogy to the ruffle, a strip of fabric sometimes gathered, creating folds. Its longtime official product slogan is "RRRuffles Have Ridges!" The ridged corrugations are designed to create a sturdier, crunchier potato chip less prone to breakage in the bag, as well as creating more surface area for absorbing dips.
Ingredients vary per flavor. The regular ("original") product ingredient list (as well as the reduced fat variant) is: potatoes, vegetable oil (sunflower, corn, and/or canola oil), salt.
Ruffles are produced in a number of flavors in addition to the regular chips, some for regional markets: Salt & Vinegar (discontinued in 2008), Au Gratin, Sour Cream & Onion, Barbecue, Cheddar & Sour Cream, Cajun, Molten Buffalo Wing, Loaded Chili and Cheese, and Tapatio Limon. Yakisoba, Stroganoff and Honey & Mustard (Brazil), Paprika, Original and Cheddar and onion (United Kingdom). Ruffles are also available in low-fat baked (not fried), reduced salt, reduced fat (25% less fat than regular Ruffles), and fat free WOW brand/Olestra versions. In 2008, Frito-Lay produced a Ruffles Thick Cut version.
Canadian flavours include Regular, All-Dressed, Augratin, Lighly Salted (50% less salt), Sour Cream & Onion, Spicy Ketchup (Discontinued), Hotwing (Discontinued), Sour Cream & Bacon*, Loaded Potato (2014)*, Jalapeno Popper (2014)*, BBQ*
- Marketed as BRO flavours in dark blue background packaging
Ruffles Onion dip, Ruffles Ranch dip, Ruffles Buffalo Ranch Dip (2014)
- "History of Frito-Lay Company – FundingUniverse". Fundinguniverse.com. Retrieved 2012-10-22.
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