All-Clad d5 Stainless Brushed 4 Qt. Saute Pan with Domed Lid The patented stainless core significantly improves stability to prevent warping and maximises the thermal conductivity of aluminium Energy-efficient advanced construction that allow heat diffusion from the bottom of the pan up to the sidewalls Interior starburst finishing improves non-stick performance Convenient rolled lip for easy pouring Safe for use in the oven and under the grill