Our reclosable bags are made from virgin LDPE (low density polyethylene), they meet FDA requirements for food contact and storage, and are BPA-Free. These bags are completely ecofriendly, harmless and no smell. The zipper seals great and easy. They are waterproof and dustproof, so they are perfect for storing delicate things to prevent them from getting damaged by water or dust. These bags are clear enough so things inside can be seen clearly.