I've been using the 70 liter since the 11th on my vacation trip, and I'm happy to report that the bag has performed without issue - things inside the bag are always nice and dry, even after heavy prolonged storms.
I've been using it to store my Exped Synmat 7.5, my 45 degree sleeping bag, camp pillow, camp led lights, and souvenir tshirts that I've picked up along the way. My tent actually fits in one of the panniers, so with this setup, I can set up the tent and get my sleeping items inside without any risk of them getting wet - or, pack them up while still inside the tent.
The bag fits really nicely on the pillion seat, wide enough to hang over the pannier key slots (you can still unlock the panniers without removing the DryPak bag), but not so wide that it will hamper your ability to sneak through narrow spots if you need to. Two ROK straps have held it securely through all sorts of twisty road hooliganism, and it's made a pretty decent backrest while on the freeway.
I've been using it to store my Exped Synmat 7.5, my 45 degree sleeping bag, camp pillow, camp led lights, and souvenir tshirts that I've picked up along the way. My tent actually fits in one of the panniers, so with this setup, I can set up the tent and get my sleeping items inside without any risk of them getting wet - or, pack them up while still inside the tent.
The bag fits really nicely on the pillion seat, wide enough to hang over the pannier key slots (you can still unlock the panniers without removing the DryPak bag), but not so wide that it will hamper your ability to sneak through narrow spots if you need to. Two ROK straps have held it securely through all sorts of twisty road hooliganism, and it's made a pretty decent backrest while on the freeway.