Thick outer layer 600D Oxford cloth, dirt, durable, feel good, tough degree than you can imagine. The middle layer is thick cotton insulation, the innermost is PEVA materials, insulation effect is super good, and the four seasons can use ~~ Name: Oxford picnic cooler bag Material: Oxford cloth + thick insulation cotton + PEVA Size: 23 * 15 * 15cm weight: 240g color: blue Rose function: with insulation, Bao cold dual function scope: picnic camping fishing vehicle shopping