Independent · UK prices · ISO ratings
Weight, ISO comfort ratings, packed size and live UK prices for 65 bags, side by side, with every source linked.
Prices checked 31 October 2026 · We may earn a commission
Pocket-sized survival bags and waterproof bivvies for kit lists, car boots and the Be Ready checklist.
Compare 18 bivvies
Down, synthetic and four-season bags with ISO comfort ratings, from festival fields to winter summits.
Compare 47 sleeping bags
We rank on tested comfort temperatures, and flag any bag where the figure is only the brand's own.
Every offer is from a UK retailer, checked daily and dated, so you know how fresh it is.
Grams and packed size side by side, so you can see what each degree of warmth costs to carry.
Specs link back to the maker's page or the test report, so you can check any number yourself.
Each comparison covers the bags you can actually buy in the UK, with specs from the makers, a plain-English buying guide and prices from several retailers.
The bag that lives at the bottom of your pack all year. Nine UK-available options from a £5 polythene sack to a mountain-rescue grade insulated bag.
9 comparedfrom £4.99
Compare emergency bivvies →A bivvy bag turns any sleeping bag into a shelter. We compare the fabrics, waterproof ratings and weights of the bivis UK wild campers actually buy.
9 comparedfrom £24.99
Compare bivvy bags →Three-season down bags for backpacking and bothies. Compared on real ISO comfort ratings, fill power and the weight you will carry up the hill.
16 comparedfrom £99.99
Compare down bags →The bags most UK campers actually buy. Synthetic fill is cheaper, copes with damp and dries fast, at the cost of weight and pack size.
18 comparedfrom £24.99
Compare synthetic bags →Bags rated for a Scottish winter, an alpine hut or a cold bothy floor. Compared on ISO comfort ratings, fill weight and what they cost to carry.
13 comparedfrom £67.99
Compare winter bags →Not the cheapest and not the lightest, but the one that gets the balance right for UK conditions.
5 photosBest all-rounderSurvive Outdoors Longer
The benchmark reflective bivvy: sealed seams, 90% heat return, and a rescue whistle.
From
£19.99
at Needle Sports
6 photosBest valueAlpkit
The UK wild-camping default: 10,000 mm, taped seams, 330 g, under £60.
From
£54.99
at Alpkit
11 photosBest valueAlpkit
Hydrophobic 750 FP RDS down with a -4 °C comfort rating for under £300, direct from Alpkit.
From
£274.99
at Alpkit
7 photosBest valueVango
A lab-tested ISO comfort rating of +2 °C for around £40, from the brand on every campsite.
From
£39.99
at Norwich Camping & Leisure
2 photosBest all-rounderMountain Equipment
Trapezoid box-wall baffles and traceable duck down for a -6 °C comfort rating at 1.2 kg.
From
£322.12
at Alpinetrek
Every ISO-rated 0 °C bag we compare, lightest first.
Every number is taken from the manufacturer or a specialist retailer, and we link to it. Prices were last checked on 31 October 2026. SleepGear is built by Pomipop, and we earn a commission on some links, which never changes what we recommend.
