Features: The Unique Design Of Libbey's Newton Glassware Gives It More Than Its Sturdy, Yet Chic, Modern Aesthetic. Straight Sides Converge With A Recessed Track Around The Middle, Creating Incredible Stacking Functionality And An Effortless Grip. Newton Strikes An Ideal Balance Of Function, Durability And Contemporary Style - Which Makes It A Great Choice For Polished Casual Dining Banquets And Fast-Paced Environments. Recessed Track Around The Perimeter Helps Provides Confident Grip. Innovative Stackable Design Minimizes Storage Impact. Heat-Treated For Enhanced Durability, Reducing Overall Glassware Cost Over Time. Safedge Rim Lifetime Guarantee.