Premium 3-piece insulated casserole set crafted with double-walled 304 stainless steel and vacuum-sealed technology for 12+ hours heat retention. Features precision-locked lids with silicone gaskets to prevent spills, while polished mirror finish resists odors and stains. Ideal for catering professionals, outdoor picnics, or meal prepping – keeps soups at 140°F+ for 8 hours. Stackable design saves 60% storage space compared to traditional food jars. Commercial-grade thickness (0.8mm inner/1.2mm outer walls) withstands daily restaurant use. Includes 1L+2L+3.5L capacity containers with wide-mouth openings for easy cleaning. BPA-free food contact materials certified by FDA/EU standards.