Mizuno Impulse Core RB Graphic Women's Vest Simple but effective, this Impulse Core RB Vest from Mizuno features Drylite technology that helps to keep you going when the going gets tough. Developed for training sessions and multi-sport usage, the Core RB Graphic Vest is made from extremely soft fabric to enhance comfort during exercise. Using DryLite technology creates a comfortable and dry microclimate to enhance performance. Dynamotion Fit patterning provides a better anatomical fit, offering you freedom of movement and comfort. BlindStitch construction provides flat seams for anti-chafing and non-abrasive comfort. Finally, reflective details enhance your visibility when out in low-light conditions.