Regular pool maintenance is tedious and time-consuming, but the tabs inside the pool chlorine dispenser allow you to keep your pool safe and hygienic all season long. It simply floats on top and spreads chlorine evenly throughout the pool water, so you can spend less time working and more time swimming. Perfect for swimming pools, water parks, aquariums, SPAs and hot tubs, etc. Dimension: 5 inches / S: 4.72 (top diameter) x 4.72 (height) x 2.36 (bottom diameter) inches 7 inches / M: 6.50 (top diameter) x 6.69 (height) x 3.74 (bottom diameter) inches 8 inches / L: 6.89 (top diameter) x 7 .28 (height) x 4.72 (bottom diameter) inches 1 x Floating Chlorine Dispenser Pool cleaning and maintenance has never been easier with floating distributor. Just insert the products, lock the lid, throw it away and you're done. It works automatically to disperse in your pool or spa so the water stays clean. Made of durable material, the dispenser lasts for years without ever fading. Made of high quality