This insulated cooler backpack is made of durable heather polyester fabric with water‑repellent property. Neat stitching and reinforced seam craftsmanship enhance long‑term service life. Built‑in thermal insulated lining keeps food and drinks cool or warm. Multiple zippered pockets and side mesh pouch offer classified storage. Padded adjustable shoulder straps bring comfortable carrying experience. Minimalist solid‑color design, great for picnic, camping and daily outdoor trips.