Got mine today! Think I love it. I used the blower part of my shop vacuum to blow up the large rings easy peesy and the mouth blow one’s a bit more effort to block the space so it would fill with air. One could just buy a pump but with some ingenuity you can try what I did. Great for us 2 older adults to stay cool in some water on hot summer days. Easy upkeep and easy takedown. Overjoyed with this purchase!!!