Description:The reason why you need to use the chlorine dispenser is to release the chemicals evenly since they could float freely on the water. If you throw the chlorine or bromine tablets into the bottom of the water, the chlorine mostly drops to the bottom, and the cleaning effect is not as good as the Chlorine Dispenser. Our Swiming Pool Floating Chlorine Dispenser owns a locking lid that keeps the chemicals tablets securely inside. Do not worry the tablets will fall out. Comes with a thermometer, which allows you to read the temperature at any time.Specification:Product: 2 in 1 Floating Chlorine Dispenser with ThermometerMaterial: PVCColor: as picturedSize: about 13*12*5cm / 5.11*4.72*1.96inProduct List:2 in 1 Floating Chlorine Dispenser with Thermometer * 1Notes:1. Due to the lighting effects and shooting angles, there is a color difference in the product, please understand.2. Due to manual measurement, there is a tolerance in the product size.