I assume that kls is meant to represent kilograms. Normally the abbreviation is kg - I have never before seen kls. 65 kg = 143.30 pounds. If kls is not kilograms but some other measure of mass, I apologise.
To convert kg to lbs you have to multiply the weight in kg with 2.20462. This will give you the weight in pounds. Kg and pound. Kilogram is an SI unit of mass whereas Pound is an imperial unit of mass. The answer after conversion is 143.3000 Pounds (Approximately).