This mat is crafted from aluminum film and waterproof PE material, making it durable and long-lasting. Its double-sided waterproof design keeps you protected from damp grass, sand, and water, while excellent thermal insulation ensures warmth and comfort when sleeping. Perfect for picnics, camping, hiking, beach outings, sporting events, or as a spacious play area, it also comes with an attached carry bag for easy storage and portability. Material: aluminum film, waterproof PE. Color: silver. Size: approximately 200x150cm. Thickness: about 0.25cm.