Everybody knows that adding more weight to exercises can help you burn more calories and tone your body. These Merrithew Mini Hand Weights can take your workout sessions to a new level by toning your arms and boosting your endurance. They have non-slip foam covers and a strap to ensure they stay put as you exercise. These hand weights are available from 1 to 2.75-lb. You can get yours for as low as $17.