Surface reinforced three times, now four times stronger. Interior with texture enhances browning and searing, creating exceptional flavor - and cleans easily. Construction made from hard anodized aluminum heats quickly and evenly. Ergonomic handles stay cool for comfortable and swift movement. Compatible with all cooktops, and safe for oven use up to 500°F (tempered glass lids up to 425°F). Dishwasher safe and suitable for use with metal utensils.