The surface of this blanket is pongee fabric, the middle is needle‑punch cotton, and the bottom is aluminium film waterproof material. The size of 200 cm by 200 cm accommodates 6 to 8 people seated or 4 adults lying down. The blanket is vacuum packed, so it may need time to regain full thickness after opening. It is hand washable or machine washable on a low temperature with mild detergent. Avoid frequent washing to prolong product life. Uses include picnicking, camping, beach, concerts, yoga, parks, travel, and indoor use. Do not expose to direct sunlight for long periods or store in damp places. After washing, air dry completely. Do not tumble dry.