Black Friday sleeping bag deals 2026: the prices to beat before you buy

Black Friday 2026 falls on Friday 27 November, with Cyber Monday on 30 November, and many UK retailers start their sales a week or more earlier. Sleeping bags are a good thing to buy in a sale, because most people only buy one every few years. But a banner saying "40% off" tells you very little. Many bags are already selling well below their RRP, so the number that matters is today's real price, not the one the discount is measured from.

Why the "% off" figure isn't the number to watch

Each year Which? tracks Black Friday prices before and after the sales. In its latest study, of 175 home, tech and health products from eight big UK retailers, 83% were the same price or cheaper at least once outside the four-week sales period. That research covered appliances and gadgets, not outdoor gear, but the lesson carries over: a discount is only as good as the price it is measured from.

Our own price checks show why this matters for sleeping bags. A month before Black Friday, plenty of bags were already sold well below their RRP, which is the price a sale banner usually quotes as "was".

So a Black Friday banner offering "30% off" a Sea to Summit Spark would simply match what one retailer was already charging in October. In our checks, Mountain Warehouse showed several bags at about half their RRP well before any sale, so judge its deals by the price, not the percentage.

The bags worth watching

We picked bags that are good buys even at full price. Most are sold by more than one retailer, which is where price competition happens. For each one we give the price to beat: the cheapest in-stock price we found at a UK retailer on 28 October 2026.

1

Best three-season bag to watch

Mountain Equipment Helium 400

Warmth

Comfort 0 °C

Weight

820 g

Packed size

24 × 21 × 20 cm

Fill

700 FP duck down, 403 g fill

The Helium 400 is the bag we would buy for UK camping from spring to autumn: an ISO comfort rating of 0 °C at 820 g. Trekitt, Cotswold Outdoor and Mountain Equipment itself all sell it, so a cut at one is worth checking against the others. Price to beat: £240 at Trekitt (RRP £300).

Reasons to buy

• Good balance of warmth, weight and value
• Magnetic Lode Lock hood/collar closure works one-handed and with gloves
• Smooth, well-baffled side zip and box-wall construction with no reported cold spots

Reasons to avoid

• Slim alpine fit may not suit larger builds
• Duck rather than goose down, and no hydrophobic treatment

Anything under £240 is a genuine saving on one of our favourite three-season bags.

£240 at Trekitt£245.95 at Cotswold Outdoor£300 at Mountain EquipmentFull specs →

2

Best value down bag

Decathlon Simond MT900 0 °C Down

Warmth

Comfort 0 °C

Weight

930 g

Packed size

11 L uncompressed

Fill

800 FP down, 495 g fill

Decathlon's own-brand down bag has the same ISO 0 °C comfort rating as the Helium 400, weighs only 110 g more, and costs far less. It is sold only by Decathlon, so there's no competition to push the price down. Price to beat: £169.99 at Decathlon, from its UK listing.

Reasons to buy

• Published fill weight, fill power and independent lab rating at this price
• Generous ~72 cm shoulder width for a mummy, full-length draught baffle

Reasons to avoid

• Heavier than premium down bags of similar rating
• Needs an R4.8 mat to reach its rating; no neck baffle reported

Already the cheapest ISO 0 °C down bag we compare. Any Black Friday cut is a bonus, not a reason to wait.

£169.99 at DecathlonFull specs →

3

Best winter bag to watch

Rab Ascent -12 °C

Warmth

Comfort -5 °C

Weight

1.35 kg

Packed size

22 × 40 cm

Fill

650 FP duck down, 680 g fill

For winter camping, bothies and the Scottish hills, the Ascent -12 °C gives a tested -5 °C comfort rating with hydrophobic down. Snow+Rock, Summits and Rab all sell it, so watch all three. Price to beat: £305.95 at Snow+Rock (RRP £380).

Reasons to buy

• Independently tested ISO 23537 comfort rating of -5°C, from a UK-filled bag
• Hydrophobic down and Pertex Quantum shell suit damp UK winters
• The roomy wide-mummy cut and side-sleeper details give space for layers

Reasons to avoid

• Heavy at 1350 g for -5°C comfort: Alpkit's PipeDream 600 is 990 g for EN comfort -10.5°C
• Main zip is only 3/4 length

Anything under £300 would beat every price we found for it.

£305.95 at Snow+Rock£319.99 at Summits£360 at RabFull specs →

4

Lightest bag to watch

Sea to Summit Spark -1 °C

Warmth

Comfort +4 °C

Weight

510 g

Packed size

8 L sack, ≈ 4.5 L compressed

Fill

850 FP goose down, 265 g fill

At 510 g this is the lightest sleeping bag here, for fast trips where every gram counts. Note that the -1 °C in its name is the limit rating. Its comfort figure is +4 °C, so it's a summer and shoulder-season bag, not a winter one. Price to beat: £270.87 at Alpine Trek, already 30% under its £386.95 RRP.

Reasons to buy

• Outstanding warmth-to-weight at about 510 g and packs very small
• Roomier mummy cut than most ultralight bags, suits different sleeping positions
• Anti-snag zip-plow and water-resistant hood/footbox fabric

Reasons to avoid

• Half-length zip limits venting and stops it opening flat as a quilt
• Very thin 10D fabric needs care; high RRP

Already heavily discounted, so don't expect a much better price on Black Friday.

£270.87 at Alpinetrek£320 at Trekitt£400 at Sea to Summit UKFull specs →

5

Best budget bag

Vango Nitestar Alpha 250

Warmth

Comfort +2 °C

Weight

1.6 kg

Packed size

Not stated by maker

Fill

Vango Insulite Alpha, offset double-layer construction

A proper ISO-rated bag (+2 °C comfort) for festivals, campsites and the spare-room drawer, from a brand you'll find on every UK campsite. Several independent camping shops stock it. Price to beat: £39.99 at Norwich Camping & Leisure (RRP £52).

Reasons to buy

• Lab-tested ISO 23537 comfort 2°C / limit -4°C at a sub-£50 street price
• Retailer customer reviews praise compressibility, price/performance, draft collar and adjustable hood
• DofE Recommended and widely stocked, with a 250S short version for smaller users

Reasons to avoid

• 1.6 kg is heavy for backpacking at this warmth level
• No independent editorial review of the 250 found; only retailer customer feedback

Near £30 would put it among the cheapest ISO-rated bags we compare.

£39.99 at Norwich Camping & Leisure£41.99 at Jacksons of Old Arley£44.98 at Mountain WarehouseFull specs →

6

Cheapest 0 °C bag

Mountain Warehouse Summit 400

Warmth

Comfort 0 °C

Weight

2.1 kg

Packed size

40 × 26 × 26 cm

Fill

Hollowfibre polyester

Shape

mummy

A tested 0 °C comfort rating for the price of a takeaway. It's heavy at 2.1 kg, so it suits car camping or a home emergency kit, not backpacking. Mountain Warehouse already showed it at "50% off" in October. Price to beat: £34.99 at Mountain Warehouse (RRP £69.99).

Reasons to buy

• 0°C comfort / -5°C limit for £34.99 on sale
• Buyers report good results for youth camps: "My son has used it for Cub camp & loved it"
• Left/right zips pair into a double

Reasons to avoid

• "The regular size was a lot smaller than I expected" and "found it restrictive"
• 2.1kg and 40 x 26 x 26 cm packed - a car-camping bag

A Black Friday "50% off" banner here is the normal price. Only a figure below £34.99 is a real deal.

£34.99 at Mountain WarehouseFull specs →

7

Best stocking filler

SOL Emergency Bivvy

Warmth

Reflects 90% of body heat

Weight

108 g

Packed size

13 × 8 × 2 cm

Fill

Heat-reflective polyethylene, heat-sealed seams

Not a sleeping bag but a reflective emergency bivvy the size of a drinks can, for a rucksack, a car boot or the Be Ready kit. It makes a useful Christmas present for anyone who walks or drives in winter. Price to beat: £19.99 at Needle Sports or Ultralight Outdoor Gear.

Reasons to buy

• Sealed seams keep rain and wind out
• Tear-resistant enough to reuse
• Rescue whistle and tinder cord included

Reasons to avoid

• Non-breathable, so expect condensation
• Narrow for broad shoulders

A small, cheap item, so discounts will be small too. Buy it when you're ordering something else, to save on delivery.

£19.99 at Needle Sports£19.99 at Ultralight Outdoor Gear£20 at LockwoodsFull specs →

The prices to beat at a glance

Cheapest UK price we found on 28 October 2026. Some offers may be out of stock: check the retailer.

Bag	Best for	Warmth	Weight	Best price
Mountain Equipment Helium 400	Three-season	Comfort 0 °C	820 g	£240 at Trekitt
Decathlon Simond MT900 0 °C Down	Value down	Comfort 0 °C	930 g	£169.99 at Decathlon
Rab Ascent -12 °C	Winter	Comfort -5 °C	1.35 kg	£305.95 at Snow+Rock
Sea to Summit Spark -1 °C	Lightweight	Comfort +4 °C	510 g	£270.87 at Alpinetrek
Vango Nitestar Alpha 250	Budget	Comfort +2 °C	1.6 kg	£39.99 at Norwich Camping & Leisure
Mountain Warehouse Summit 400	Cheapest 0 °C	Comfort 0 °C	2.1 kg	£34.99 at Mountain Warehouse
SOL Emergency Bivvy	Emergency	Reflects 90% of body heat	108 g	£19.99 at Needle Sports

How to tell a real sleeping bag deal from a fake one

1. Compare with the price to beat, not the RRP. Write down today's real price, from our table or your own search, before the sales start.
2. Check the size and zip side. Many bags come in regular and long, with a left or right zip. Deals often apply to only one version, and popular sizes sell out first.
3. Read the comfort rating, not the name. Some bags are named after their limit temperature, which is several degrees colder than you'd sleep comfortably at. Look for an ISO 23537 comfort figure.
4. Watch out for older versions. Brands rename and refresh bags. Last season's version can be a real bargain, but check you're comparing like with like.
5. Add delivery costs. Free-delivery thresholds vary, so a slightly higher price with free delivery can work out cheaper.
6. Don't panic-buy. Which? found most products are the same price or cheaper at other times of the year. If the price isn't better than the one you wrote down, you lose nothing by waiting.

Your rights if you buy a sleeping bag online

Under the Consumer Contracts Regulations, you can usually cancel an online order from the moment you place it until 14 days after the goods arrive, without giving a reason. You then have 14 more days to send it back. The retailer must refund you within 14 days of receiving the bag, or of you showing proof that you've returned it. Check the returns policy for who pays postage. If the terms don't say, the retailer pays.

Which bag do you actually need?

For the full range in each type, see our comparisons of down sleeping bags, synthetic sleeping bags and winter sleeping bags.

When are the Black Friday 2026 sales?

• Early deals: many retailers start in the week before, from around Friday 20 November.
• Black Friday: Friday 27 November 2026.
• Cyber Monday: Monday 30 November 2026.
• Our price check: the prices to beat in this guide were checked on 28 October 2026.