The ideal stepping stone in your hydration and running game on shorter distances, ACTIVE SKIN 4 is easy to use, comfortably wearable and super modular. With soft, breathable fabrics and a snug secure fit, its strategic chest pockets ensure your flasks stay accessible at all times. Designed for reliability and durability. With two new chest pockets, you can now access your flasks even faster. Includes 2 x 500ml soft flasks. Also compatible with 1.5L hydration bladder. An updated SensiFit design with soft fabrics, more freedom of movement, inner mesh for maxi comfort and easy adjustments to keep your vest just where you want it. With two new chest pockets, you get even quicker access to your flasks on the go. 2 x 500ml soft flasks included. Also compatible with a 1.5-liter bladder.