<p>A dry bag is a roll-top sack made from welded or coated fabric, typically holding anywhere from 5 to 40 litres, designed to keep a whole load of gear dry when the roll-top is folded and clipped shut. It is the workhorse for canoeing, kayaking, wild camping in heavy rain, coastal walking and general bad-weather bushcraft, where a rucksack alone will soak through in an hour of proper Welsh or Scottish drizzle. Inside a dry bag you can pack spare clothing, a sleeping bag, a first aid kit, food and electronics all at once, and many are rated to survive a dunking or brief submersion rather than just splashes, which matters if a canoe capsizes or a rucksack ends up on wet ground.</p>
<p>A waterproof phone pouch is a small, close-fitting sleeve with a welded seal or clip closure, built to protect a single phone, and sometimes a set of keys or a wallet, while still letting you use the touchscreen through the plastic. It is the natural choice for wild swimming, festivals, paddleboarding, kayaking day trips or simply walking the dog in a downpour, when carrying a full dry bag would be overkill. The two are not really competitors; a phone pouch often lives inside a dry bag for a belt-and-braces approach on serious trips. Expect dry bags from roughly £8 to £45 depending on size and grade, and phone pouches from around £5 to £20.</p>