Keep cages off your ridesport the Royal Hydration Pack instead. Royal designed this pack with MTB comfort in mind. Its low-profile mesh shoulder straps stay out of your way while youre bombing a stump-studded trail. When you get a little parched, suck down some cool water and hit the jumpsthe two-liter bladder keeps your H20 at a refreshing temperature. External bungee cords hold a rain jacket in place, and the small tool and key pocket prepares you for on-trail adjustments.