Looking for a new hydration bladder to fit in my frame bag.

Like the camelbak one i currently have, but the filling hole is too big.

Any other options? looking for 2 litre capacity

I really rate the Source bladders, or for a weight weenie option, take a look at Platypus

Been thinking that the new camelback bladders in their new waist mounted sacs would be ideal for using in a frame bag. The pipe take off point and the fact their desined to be laying flat should be better for our purposes. Just need to see one in the flesh to check this out.