The 3 in 1 Cardio Pro Fitness System by Wince International is the ultimate in Cardio Strength Training. This Patented system includes a pair of adjustable ankle weights (up to 7.5 lbs. each in 1.5 lb. increments) , an adaptor harness which converts the ankles weights into a weighted vest (up to 15 lbs. in 3 lb. increments) and a pair of Gripless Palm Weights (1.5 lb. each) which are supported around the back of your hand and wrist. The Cardio Pro is constructed of soft neoprene, and the weights are comprised of pouches of soft iron sand for maximum comfort.