Each Ballet Cold Storage card consists of 35 grams of 304 stainless steel formed in the size and shape of a credit card and a tamper-evident sticker that is made of polyethylene terephthalate (PET). These high-quality materials make Ballet Cold Storage cards extremely durable. If stored in a stable environment, they will last much longer than the average human lifespan.
What materials are Ballet Cold Storage cards made from?
Ballet Support