T-fal Ingenio Neo IH Serenade Excellence 9-piece set, with removable handles Compatible with IH and gas stoves. Used for about 5 years on an IH stove. Please consider this item with the understanding that there are small scratches, oil stains, burnt spots, and discoloration. I don't think there is any warping. It will be packed and shipped in a box from another T-fal product. No pets or smokers. Stored and packed by a private individual. Kitchenware, cooking utensils