The KD Sports Pro Comp vest uses a high-grade soft neoprene. The vest is designed to offer a great fit, support, and comfort. This vest offers a little more stretch than our standard sublimation vest and will fit a wider range of people. All KD Sports vests are custom hand made by our partners at Masterline USA. They are designed with 1 layer of neoprene and foam directly stitched to it. This prevents the vest from holding any water for lighter weight and faster drying.