An early pioneer of training progression and pushing the body to its limits - progression was paramount to Bruce Lee's training system. To reach a higher level Lee would complete some workouts with a load on his back in order to add resistance to whole body movements. When these workouts became easy he would add a few more pounds - ultimately strengthening his physical energy, capacity and endurance. Deluxe vest features durable yet breatheable construction, lace up sides to allow for chest expansion and breathability and low profile design.Colour: Black. BRUCE LEE helpline: 01159 820 122.