TJYeti
Knows about bikes
I also have two. For mountain I have a camelbak lobo and unlike szymon above, I think it has plenty of room. I find it has plenty of room for my wallet, keys, phone, multi tool and a cliff bar or two. Weather it's enough room or not will depend on your personal needs. For the road - and I know a lot of roadies really thumb their noses at packs - using one isn't "cool", I have a camelbak rocket. It sits well on my back and doesn't slosh around. If just two bottles will cover my ride great, but depending on ride time, heat and if I can depend on being able to stop and refill on a longer ride I'm happy to have it. Yes, it's hot on my back, but I don't like extra bottles in my jersey pockets so it's worth the trade off. Ymmv.



