Patagonia has launched a new version of its most water-resistant backpack, designed to keep equipment dry even when the entire bag ends up underwater. The Guidewater Backpack 25L is part of Patagonia’s submersible fly-fishing collection, alongside the existing Guidewater Sling and Hip Pack. However, the backpack is the significant new arrival, replacing the outgoing 29-litre Guidewater model with a smaller but more substantial design. The backpack now has a padded back panel, shaped shoulder straps and a removable padded hip belt intended to distribute heavier loads more comfortably. The Patagonia Guidewater Backpack 25L is listed at £320 in the UK, $349 in the US and €350 in Europe (~AU$573).