Sleep Vantage Cushion Air Pad An air cushion that adjusts the air while sitting. - B4 size, easy to carry. - Adjust the air while sitting to achieve a perfect seating comfort. - With folding button. - Folds compactly and is great for use both indoors and outdoors. - Can be folded and stored directly in a B4 bag. - Ideal for hard seating surfaces. - Perfect for walks, watching sports, hiking, etc. - Individual package size: W260 x D370 x H40 (mm) / 238 (g) [Quoted from the official website] I received this when I purchased a bed. Unused.