SAFE, STRONG, DURABLE, AND LONG LASTING
Flat Stacks are made of silicone. Unlike plastic, silicone is a non-toxic, BPA-free material making it safe for your family. Silicone can withstand extreme heat or cold without bending, cracking, or degrading and is stain and odor-resistant. Flat Stacks will last much longer than plastic containers so you won’t need to replace them, saving you money and helping the environment.