This is a waterproof gray ROCKBROS backpack-style cooler bag. I used it once in the car while traveling, but it was too big, so I'm selling it. It's a size and weight that fits comfortably on a woman's back and is easy to carry. A special lubricating oil is included. To use it, apply it to the zipper with your finger and let it sit for a few hours. 〈Capacity〉 Approximately 20L 〈Body Size〉 Width: Approximately 35cm * Height: Approximately 49.5cm * Depth: Approximately 23.5cm 〈Internal Dimensions〉 Width: Approximately 29cm * Height: Approximately 39.3cm * Depth: Approximately 16cm 〈Weight〉 Approximately 2.3kg 〈Accessories〉 Special lubricating oil 〈Features〉 Keeps cold for up to 48 hours It has been stored at home, so the condition is good. There are no smokers or pets in the family. - Brand: ROCKBROS - Color: Gray - Type: Cooler bag