Lay's® Brand Stax® Brand Potato Crisps Salt & Vinegar. Artificially flavored. Gluten free. Lay's Stax® brand are the ultimate way to recharge! Lay's Stax® salt and vinegar artificially flavored potato chips give you the full flavor and crispy crunch that adds great taste to your busy day. Enjoy Lay's Stax® crisps at the office, around the house, or wherever you are! Please recycle. Frito Lay®. Visit our website @ fritolay.com. Questions or comments 1-800-352-4477. Weekdays 9:00am to 4:30pm Central Time. ©2007 Frito-Lay North America, Inc.