These durable and attractive containers elegantly represent the Innate synthesis of Clean Design and Chain of Custody. Perfectly functional and aesthetically pleasing, our single wall containers are made from premium food-grade type 304 stainless steel, food-grade #5 polypropylene, and proprietary food-grade silicone: all BPA- and Phthalate-free, and independently tested to USFDA, California Proposition 65 and European Norm standards.