For lovers of a sleek design, an underflow pool is a must. Because the water is evacuated just under the copingstone, you can extent your terrace to the rim of the water. The water surface will be maximally 5 cm under the copingstones. Having an overflow or an underflow pool, not only the visual aspect will be stunning, also the flow of water is faster than compared to other types of pools. This way, you have the best water quality, guaranteed.