<p>When British weather turns against you, the shelter in your pack matters more than almost anything else. A tarp and a bivvy bag both keep you off the misery of an exposed night, but they solve the problem in very different ways. A tarp is a lightweight sheet of coated nylon or polyester that you pitch with cordage and pegs to create a roof over your head, giving you room to sit up, cook and share space. A bivvy bag, by contrast, is a waterproof outer shell that slides over your sleeping bag, wrapping you in a compact, personal cocoon. Understanding that basic difference is the first step to choosing wisely.</p>
<p>In practice, the choice comes down to how you camp and what you are willing to carry. Wild campers facing wet, blustery British conditions often value the tarp for its adaptable pitch and airflow, while solo walkers chasing minimal weight and a fast setup lean towards the bivvy. Prices span a wide range: a basic tarp can be had for around fifteen to thirty pounds, with quality options from the likes of Go Outdoors, Alpkit or DD Hammocks running fifty pounds or more. Bivvy bags start near twenty pounds for simple emergency shells and climb past a hundred for breathable Gore-Tex style models. Many experienced campers, tellingly, end up carrying both.</p>
| Feature | Tarpaulin | Bivvy Bag |
|---|---|---|
| Weather protection | Excellent overhead cover from rain and sun, but open sides let wind and driven rain reach you unless pitched low and carefully. | Fully enclosed waterproof shell that seals you in against rain, wind and ground damp, though a soaked outer can chill an unlined sleeping bag. |
| Pack size and weight | Light and packable, typically 300 to 800 grams, though cordage and pegs add a little bulk to the load. | Very compact and often lighter, from around 200 grams for a basic shell up to 700 grams for a breathable model. |
| Setup speed | Slower and skill-dependent; you need trees, poles or walking poles plus practice to pitch it well in wind. | Almost instant; unroll it, slide your sleeping bag inside and you are ready, ideal for a late or exhausted arrival. |
| Space and comfort | Generous covered space to sit up, cook, sort kit and shelter a companion or two under one pitch. | Snug and personal with room for one; comfortable to sleep in but cramped for anything beyond lying down. |
| Ventilation and condensation | Excellent airflow thanks to open sides, so condensation is rarely a problem beneath a tarp. | Prone to internal condensation, especially with cheaper non-breathable fabrics, which can leave your bag damp by morning. |
| Versatility and best use case | Highly versatile; works as a shelter, groundsheet, windbreak or gear cover, and suits group or basecamp wild camping. | Focused single purpose; best for fast, light solo trips, bothy backup and emergency use where speed and low weight matter most. |
| Price band | Roughly fifteen to thirty pounds for basic sheets, fifty pounds and up for quality camping tarps with tie-outs. | Around twenty pounds for simple emergency shells, rising past one hundred pounds for breathable waterproof models. |
<p>Choose a tarp when you want space, adaptability and airflow over outright simplicity. It comes into its own for basecamp-style wild camping, group trips where two or three people shelter under one pitch, and longer stays where sitting up to cook and sort kit matters. In damp British conditions the open sides keep condensation at bay, and the same sheet doubles as a windbreak or gear cover. You will need to carry cordage and pegs, and to practise pitching in wind, but the payoff is a versatile shelter that adjusts to almost any camp.</p>
<p>Choose a bivvy bag when weight, pack size and speed are your priorities. For solo fastpacking, summit camps and long routes where every gram counts, nothing beats sliding into a waterproof shell and being ready to sleep in seconds. It is also a sensible emergency backup to keep in your pack year round, and a reliable option in exposed spots where pitching a tarp would be a battle. Accept the trade-offs of cramped quarters and possible condensation, especially with cheaper fabrics, and a bivvy rewards you with a fuss-free, genuinely minimal night out.</p>
<p>Neither shelter is simply better; they suit different nights out. The tarp offers space, ventilation and versatility, making it the stronger pick for group camps, longer stays and anyone who values room to move in wet weather. The bivvy bag wins on weight, pack size and speed, and makes an excellent solo shelter or emergency backup. Given how affordable both can be, many British wild campers carry the two together, pitching a tarp overhead for cooking and shelter while sleeping in a bivvy beneath it. Match your choice to your trip, your group size and how much you are willing to carry.</p>
A versatile 3x3m tarp with multiple attachment points for building shelters in dozens of configurations. A bushcraft mainstay for staying dry off-grid.
A lightweight reflective survival bag that traps body heat to fend off hypothermia in a cold-weather emergency. Packs down small enough to live permanently in a rucksack or car.