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 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. 18 1/4" L x 15" W x 7" H