Specifications: Size: about 4.5 * 4.5 * 1 inch / 11.5 x 11.5 x 2.5 cm cm Shaper: starfish Color: White Material: sponge Quantity: 6PCS Features: 1. Absorbs approximately 40 times its own weight in oil, mud, grime and other types of scum. 2. You simply float the sponge in the skimmer of the hot tub. whirlpool, spa or swimming pool. Two oil-absorbing sponges floating around in the water are recommended. 3. When the sponge is saturated, just squeeze out the oil, rinse the sponge and use it to clean. new, it will always maintain good performance. 4. Suitable for use in many occasions, such as: bath & shower; whirlpool, swimming pool, massage tub, ponds; fish, aquariums and so on. 5. You will get 6 x starfish shaped oil absorbing sponges. Package includes: 6 x oil absorbing sponges Notice: Please do not use liquid detergents or enzyme liquids to clean the product. It will accelerate product decomposition and turn brown. one wash at a time; water is recommended.