I know it's been asked before but I can't find the post. In the US I used the awesome 1l Smartwater bottles for backpacking with. They mated with my Sawyer squeeze perfectly. I loved them but of course I didn't bring any with me. I'm looking at the 1l Sw bottles here and they have a wider mouth. Which 1l bottles that similar in shape will mate with the Sawyer squeeze here in the UK? They have to be 1l as I have to carry enough water for me and two dogs, which often means toting 2l minimum.