The Fly Green HydroBag2(TM) is another great and unique bag choice when lightweight performance matters! Its perfect for those hot days, mountain courses or even everyday rounds. The HydroBag2(TM) holds approx. 10-12 discs in 6 vertical sleeves. Includes an Internal 2 liter water bladder to keep you hydrated on the course. The HydroBag2(TM) offers a zippered pocket for basic gear. Chest and waist straps keep the bag secured to your back. Player designed ergonomic back support and padding make the HydroBag2(TM) the right choice for comfort and feel. The HydroBag2(TM) is the perfect size for so many players.