Size: Suitable for a round pool with a diameter of 183 cm. Material: Swimming pool cover made of high quality and environmentally friendly non-toxic PE (polyethylene) material. The waterproof swimming pool cover can extend the life of the swimming pool and make the swimming pool more durable. Function: The pool cover fits snugly over the top of the pool to prevent leaves, dust and debris from accumulating in the pool. The wear-resistant rope is attached to prevent it from being blown away by the pool. wind. Reduce water waste: limit evaporation and reduce the need for chemicals. Easy to install: lightweight, foldable, soft to the touch and without hurting your hands, easy to move wherever you want want,such as gardens,camping,balconies,easy to install,suitable for round pools.