What type of stainless steel are the tiffins made from?
Happy Tiffin latch tiffins and pyramid tiffins are manufactured of AISI 201 stainless steel. This steel is lighter, 30% stronger, and provides superior corrosion resistance than 18/10, 18/1 (300 series) counterparts. That makes for a light and strong stainless steel food container. 18/10 stainless steel is great if you are shopping for flatware, but it’s not what you want in a tiffin!