double-deck edgeless swimming pool image

Quick answer：

An edgeless swimming pool, also known as a zero-edge pool, is a type of pool designed with no visible boundary between the water and the deck. It creates a seamless transition between the pool and the surrounding area, often enhancing the aesthetic appeal of a garden or outdoor space. Double-deck refers to a pool with a lower level for children or casual use and a higher level for adults, offering different depths and experiences.