I have been looking for a compact hydration pack for over a year and tried on probably every pack Camelbak has ever made... This Classic is definitely the winner. In fact I looked at many women-specific packs and still found this one to be the most comfortable and best fitting (I'm 5' 6", average weight). There are several things I love about this pack. It's has great size and shape: sits on your back nicely without bulking up or looking weird. The outside zipper pocket is just big enough for all the necessities: smart phone, chopstick, keys and small sunscreen, etc... It's got the bungee cord on the outside: super handy for your extra layer. And I absolutely love the outside access to the bladder! No more struggling with trying to fill it up quickly or taking it in/out for maintenance. I recently took it for a 4 hour road bike ride and it was very comfortable. Extremely happy with the purchase!