Calphalon Premier™ Space Saving Hard Anodized Nonstick Cookware securely stacks to save 30% more space*. Plus, the unique cookware design and flat glass covers stack and nest in any order**. The Calphalon Premier™ Space Saving 4qt chef's pan and cover have 10” diameters and can stack with other 10” diameter products to save more space in the kitchen. The durable, hard anodized construction allows for even heating with no hot spots and is dishwasher safe for easy cleanup. The 3-layer nonstick interior is durable enough to withstand metal spatulas, spoons and whisks.