X-Small FINIS Thermal Swim Shirt for Youth - Black, Heat-Retaining BiPoly Fabric

Get an excellent swim workout or ratchet up your training session with this FINIS thermal training shirt, which creates a natural drag effect to help build muscle endurance and elevate training. The unique, comfortable biPoly fabric provides warmth in the water without sacrificing range of motion while swimming. The flexible fabric does not impede with stroke technique and does not put any added stress on the shoulders. And higher speeds can be achieved when shirt is removed, helping re-create race-speed scenarios during training. The Finis Thermal Training Shirt has a dual purpose of providing warmth to swimmers by trapping body heat with its unique "biPoly" fabric, and elevating training with the natural drag of the shirt. Made from strong, yet lightweight material, the Thermal Shirt conforms to a swimmer's torso but does not restrict range of motion. Elevate endurance and increase muscle while wearing the Thermal Training Shirt, then remove it for higher speeds, recreating race pace.