All of us have been to a swimming pool at least more than once in our lifetime.

Everyone has been to a pool area at least more than once in our lifetime. I am sure you have seen the drains around the perimeter of the swimming pools.
Water in a swimming pool should be constantly circulated through a filtering system to remove debris and dirt. In a swimming pool filtration system, water flows to the filters through various drains found at the bottom of the pool (the lowest point).
At the top of the pool are pool drains that continously drain water (debris such as twigs and leaves) from the pool. In order to avoid people from getting hurt by the pool drains around the pool, pool drain covers (known as pool grate s or pool gratings) are used to cover the pool drains.
Swimming pools shall no longer be seen just as an amenity; today they are part of an attractive landscape. With its natural attractiveness and suitability finer quality than natural granite, Jonite provides an ideal pool grates. Jonite grates have excellent slip resistance, which makes it safe for both children and adults especially in frequently wet areas.
Have a look at our range of swimming pool grates here. https://www.jonite.us/products/pool-grates