Sandbox pools

 

— a sandbox pool is a universal play area with a hard bottom and sides, which the user can fill with sand, water, etc. at his own discretion. So, when filled with water, the container turns into a small pool, and if it is filled with sand, a sandbox will come out of the container. There are also special sets of several containers on the market: one of them is reserved for the pool, and the second for the sandbox.