Material: PVC (polyvinyl chloride) Product Size: Thickness: (approx.) 20cm When inflated: (approx.) 175cm x 83cm When not inflated: (approx.) 185cm x 85cm Regarding bulk purchases: If you would like to purchase multiple items, please let me know in the comments. For purchases of 3 or more, we offer a combined discount (600 yen off per item), and we will create a dedicated page with the discounted price. Air pump is not included. *This is a play item and is not for life-saving purposes. We are not responsible for any accidents that may occur while using this product. Please understand and order accordingly.