adidas Techfit Racerback Training Women's Vest Cardio to arm day, this training vest will get you from working out to breaking your personal records. Everything about this vest is made to help you perform your best. Constructed from AEROREADY technology, the Techfit Racerback Training Vest offers moisture management, wicking away sweat and excess moisture providing a dry, fresh feel during intense and sweaty training sessions. Mesh fabric on the upper back helps to increase airflow in and out of the vest to regulate body temperature so you stay nice and cool while the slim fit of the vest allows for a full range of mobility in every direction without any restrictions. Sustainability - 83% recycled Polyester.