It’s amazingly comfortable and great to use.
I love this Salomon bag. It’s so comfortable to wear that you barely feel it. It’s really light weight, so even when you have the 1.5 litre hydration bag filled it still hardly weighs anything. As the hydration bag is in its own compartment, there is plenty of space for your stuff in the main compartment. Then for stuff you want on the go such as energy gels you can pop them in the small easy to reach compartments on the straps. The attachment to the hydration pack is also really easy to use, you just suck on it and it doesn’t leak when you’re not using it. So you don’t even have to take your hands off the handbars to use it. I recently used it on a 40 mile training ride in preparation for an 80 mile sportive I’m doing in a few weeks. Overall I highly recommend it.
You can get it from Wiggle here.