Handweights can increase calorie burn and improve muscle tone when you walk. But be careful if you use handweights that are too heavy you can throw your stride off balance. We developed and tested these handweights to make sure that they are safe and effective. At 1.5 lbs. each they will increase calorie burn by up to 25% while toning key muscle groups such as your arms chest and shoulders. Built with soft durable foam and featuring adjustable hook-and-loop hand straps these weights are extremely comfortable and built to last. Note: Product color may vary slightly from photos.