The RTIC Insulated Tote is the perfect bag to bring to the beach, have for a picnic, or to keep those items cool on the way home from the store. The outside is made of heavy-duty polyester & the inside utilizes a high density insulation, with a convenient zip top. We recommend using RTIC Ice Packs to keep items cold. If you choose to use ice in your cooler we recommend putting loose ice in a plastic bag to avoid leaks. The RTIC Insulated Tote also has a place to store extra snacks and small gear-a zippered pocket on the inside. The soft liner is made of FDA-approved food contact material that's safe for use with food and drinks. Antimicrobial, product-protecting properties are built into the flexible lining to resist odor, mold and mildew, making it easy to clean between uses.