Stasher storage bags are designed in California and produced responsibly in China. They are plastic free with a patented pinch-loc seal, and made of 100% pure platinum grade silicone. There are no fillers or toxic products in Stasher bags — no BPA, BPS, lead, latex, or phthalates. A portion of every Stasher sold goes straight to high-impact nonprofits like Surfrider and 5 Gyres, that are dedicated to preserving and rehabilitating our oceans. So far, Stasher has sold millions of bags preventing over 1 billion single-use plastic bags from entering our oceans and landfills. And they're just getting started.