Effectively guard against algae and other organisms. Enjoy crystal clear pool in this coming hot summer. Specifications: Type: with thermometers, without thermometers (optional) Color: blue+green Package size: 190 * 190 * 120mm / 7.5 * 7.5 * 4.7in Package weight: with thermometers: 222g / 7.8ounce without thermometers: 218g / 7.7ounce Packing List: 1 * Pool Floatings Dosing Dispenser