SizeThe unfolded size is about 40 x 29.5 x 1 cm , which is small, light and portable. Warm materialMade of durable new pearl cotton,9mm high,It is thermal, high wear resistance, elasticity and odorless properties, protect the buttocks from cold and wet. Waterproof and moisture-proof: Ideal for outdoor sports, it is the best partner when you are on the ground or indoors after sports sit in the park. No longer afraid of cold, dust and wet pants. Foldable Seat CushionThis foldable seat cushion can be folded to save space and packed in the black bag in the accessory. Depending on the size, it fits any backpack or handbag. Very easy to store. Lightweight and portable, compact and easy to carry. Wide ApplicationsPortable seat cushion is suitable for outdoor activities such as camping, fishing, hiking, picnic, BBQ, parking, traveling and so on. It is also very suitable for indoor activities. The size of the open portable foldable seat cushion is suitable for children to participate in "forest day". Also for adults.