CMC Stabilizer 5 in a stainless steel container, a health accessory designed for semi-permanent use. - Product Name: CMC Stabilizer 5 - Material: Stainless steel container - Response Material: Carbon Microlight - Expiration Date: Semi-permanent I purchased this two years ago for electromagnetic wave protection. There are some small areas where the film has peeled off, but I believe it functions without issue. Please consider this when purchasing. Thank you for looking.