PORTABLE ABOVE-GROUND POOL

An above-ground pool is provided and includes a pool bottom and a pool wall, together defining a water storage space. The pool bottom includes a lower bottom sheet connected to the pool wall and an upper bottom sheet, the upper and lower bottom sheets connected in a inner ring edge defining a sandwich region within the inner ring edge. A porous elastic material is disposed between the upper bottom sheet and the lower bottom sheet in the sandwich region. A water drainage device includes a water drainage valve and a water drainage pipe, and the water drainage valve penetrating through the pool bottom and connected to the water drainage pipe beneath the pool bottom. A vent hole through the lower bottom sheet in the sandwich region provides communication between the porous elastic material and an environment external to the pool. The vent hole is disposed in a region of the pool bottom which is lifted off an external surface by the water drainage pipe beneath the pool bottom.