It's a clever design - first you lay it out ...

... then you pump up the ring around the top ...



... and once the ring is inflated you smooth out the floor of the pool and start filling it up:

The inflated ring floats at the top of the pool and rises as it fills and voila, you have somewhere to swim.





The boys are absolutely loving it and Grant and I have also enjoyed having somewhere to cool off. Hooray for lovely hot summer days!